What are the most useful gems to use in Rails?
RubyGems were developed to simplify and accelerate the stages of the application creation deployment and library connection. Utilizing this package manager for Ruby saves you time as you get ready-made solutions to almost any task instead of writing the functions from scratch. Each gem contains a particular element of functionality including all related files. Unfortunately they aren structured in any way so in order to find ruby gems it better to use a regular search engine and the required key words (check GitHub s ). Our dedicated development team also actively employs Ruby Gems in the process of software development. Here is the top of the most popular and useful ruby gems according to our experience GeoCoder s . Being able to connect through itself over 4 APIs this Ruby gem implements both the direct and reverse geocoding by IP address geographical coordinates and even real physical addresses (e.g. the address of the street). Bullet s . The most downloaded Ruby gems out there. It was initially created with an intention to boost software performance. It does so by decreasing the total amount of client-server requests. Basically Bullet tracks the N+1 cases of requests and notifies the developer when other tools can be used instead (e.g. cache counter). Pry s . We rmend to simplify the bug fixing procedures for your RoR-based application with the Pry gem which is a more advanced alternative to the standard IRB wrapper. ActiveModelSerializers s (which starts lagging while processingpound documents) and uses caching. Fast JSON API s . Fast JSON API wille in handy when you need fast serialization of software code. It works much faster than Wicked PDF s . This gem is working alongside with wkhtmltopdf s and helps realizing an interaction with the DSL generator. Devise Masquerade s . This Ruby gem helps developing multi user apps. In particular youll be able to test your app from the perspective of users with different levels of access. Devise s . Based on the MVC model the Devise gem can provide secure user authentication and session management. Letter opener s . If you need to create a newsletter mechanism to send notifications to all users that launched your app this gem will help you do that much easier you won need to integrate and configure your own SMTP server. Money Rails s . If you are planning to integrate your app with Ruby Money this gem wille in quite handy. Pundit s . A tool that allows defining different levels of access to the app functionality according to the rights of an authorized user.
Why do people leave SVN and start using Git?
Question Why do people leave SVN and start using question qid 56951838 Git? I found the underlying model to be extremely small and rather beautiful. Ive exed it to a curious party once in its entirety in 1 minutes and they got it. It changed how I think about code and data. I try now to make my own code stupid like git. I used SVN for years daily and loved it. Since moving to git I see SVN as uninteresting and very limited. It just a bucket to dump things into. It capabilities are a subset of git. I can use git in exactly the same way as SVN but the same can not be said for the reverse. I love that branches are nothing more than a file named for your branch with a hash in it. Literally creating a branch is making a file with 4 hex digits in it. The end. I love that the whole system hangs off a DAG which I have full and easy control over. I can cut it all up rearrange it clean it and groom just how I like which is important to me as I spelunk the histories of dozens of old projects and libraries learning from my past rekindling old ideas and revisiting entire projects exactly as they were at any point in their histories. Because so many things are in git now my dependencies are all git-based too and I as always with git quickly and easily them into my project at specific points and when I go back in time in my projects all their dependencies return to those times too. I like that for technical reasons for nostalgic reasons and for reasons of correctness. I love how amazingly well integrated git is with Vim through Vim plugin god Tim Pope fugitive plugin. I have the same kind of high-speed muscle memory power over git that I do over in Vim. I never just dump a bunch of things into a bucket in git. In a few seconds I select out just the parts Ive changed that make sense as a single change down to the character and createmits that do exactly what the briefmit subjects say they will. I love in Vim how with a couple of key presses Im suddenly walking back and forth through themit history of the current file a key press either way or jumping into and back out of all the changes around any one of those historical files and how as is the norm for me on Linux I can throw it all away and find myself right back where I was. Side note I love (but don use - it even too crazy for me) that Vim has tree undo and can save its full tree of undos to a file which I can version along with my projects meaning that when I go back to any point in time I can undo redo and jump to all my other undo branches from that moment in the past. Complete insanity! I love how malleable git is. The network down or Im somewhere without internet; I can keep creating my small cleanmits. My home network is down; I drag the repo with last night work to a thumb drive and then at work add the thumb as a remote pull in the changes and trash the remote all in a minute or two. I love that I can decide that 2 things I did on a branch are worthy and cherry pick them over to my good branch then decide the rest of the branch is crap and just throw it away. I even love that I aliased cherry-pick to cp and that it looks like the Linux copymand which is exactly what cherry picking is. I love that I can so easily rearrangemits and throw some out and merge them for tiny fixes that don deserve or require their ownmit. I have full control over my clean history. I loved thanks to my granularmits that when I noticed all the work I was doing on some assets and on a related tool all intermittently in a line on a feature branch should really have been 2 unrelated branches one for the asset fix needs for mypany that the tool was revealing and one for the tool idea I was specing out against the assets and planning to just use on my own for a while I could once again in a couple of minutes drop a temp branch name switch to a new asset name and interactively rebase to throw away the toolmits (easy to pick out with my subject line style) and then jump back to the temp name switch to a new tool name and interactively rebase to throw away the assetmits splitting it into 2 parallel branches. It was so easy and straightforward to do this just deleting lines from a generated playlist ofmits in Vim. I loved similarly when I had the opposite wish and realized 2 different histories should be merged into one repo and I wanted themits interleaved I could just add the two repos to a new repo as remotes pull in all their objects do a quick sort of their hashes by their unix epoch times and a quick loop to cherry pick them to a new merged branch yet again in minutes and the solution popped into my head immediately because git is so small and simple and controllable. I made a little video of zipping and unzipping git branches and whole repos here s . Ive loved the few times I had a weird bug and was able to in logarithmic time hop right to the offendingmit made weeks ago care of git bisect and even automated it one of those times letting it find the problem for me. Im learning about threading now and Im loving that I can have the non-threaded version of my work that doesn do the huge UI-crippling checks in one branch and another with UI-freeing threaded code and several more with various threading experiments and I can instantly hop between them and pull various pieces back and forth and push them to home and work as I figure out what I want and there wasted time. Everything I do in the ~7 other versioners Ive used over the years is so slow and I couldn do anywhere near what I do now in git. I love that I can work truly on my own and don have to alert an entirepany about my branch names or file checkouts or anything else. I love that almost nothing I do is tied to a central anything so everything except those two things (push) happens instantly. I love that my entire configuration is in a simple dotfile on my server (with tons of others) so setting up a newputer especially when switching jobs just the way I like is an immediate thing instead of weeks of iteratively attempting to recreate what I like as everyone I know using Windows seems to do for everything. I know they have some options here but they never seem to use them. In fact I had a lunch convo recently with coworkers who were proud of their use of all defaults because you lose your settings all the time anyway it better to just get really good at what provided by default. What? I love that git is a content addressed store addresses by hashes and immutable. Functional programming and Haskell in particular have shown me what an amazing set of power tools these things are and I want them in more places in my life. Eventually I want git powers everywhere. To that end Ive been following the Nix idea for a couple of years. Nix is a purely functional package manager with a model very much like git. NixOS is a Linux distro built around it. Every application traces its dependencies all the way back to the particularpiler andpiler flags so you can always have exactly the versions of software you require and you can have every version of anything you want without them conflicting with each other. You can say you need a shell with the following versions of the following apps and instantly it available. Then you can pop up another shell with apletely different set and it all just works. And I love that all of this power requires no frickin GUI or mouse. OMG do I hate mousing around in GUIs the speedbumps of the dev world. Git is a big calming breath of fresh air and lets me work far faster than I did in SVN (or any of the others) far more powerfully and ges me in multiple ways toward creating better results.
Do you know any program where you can merge PDF files into one without limits? It doesn't matter if I need to pay for it.
If you want to do this without any limits the program is much likely to require a payment. Virtually all PDF editors build the feature tobine PDF files like Adobe Acrobat Foxit Nuance but the price is quite high if you don need the editing function that often you can use a PDF creator. For mac users Cisdem PDF Converter OCR is rmended you can create PDF and convert PDF with this program also it supports OCR. For Windows users IceCream PDF Converter is rmended same as Cisdem it offers 2-way conversion but not support OCR.
What made you switch to Linux as a former Windows user? State the name of your distro of choice, reasons for the switch, how you made the switch and the overall experience.
TLDR I started using Fedora Linux as a work-only OS in 212 so I could use CUDA without a Visual Studio license. I started to prefer the user experience to that of Windows and have been using Fedora as my primary OS since early 213. The transition was a bit rocky at first but having learned from the experience and with distributions getting more user friendly to setup installing a new distribution today is a breeze. KDE Plasma gave me the familiar Windows feel which did help a good bit in not feelingpletely lost. The Long Answer My journey to Linux began in the fall of 212. At the time I was a graduate student working on my PhD inputational astrophysics. Some of the code I had written for my research was horrendously slow. It was going to take days to run once and I was likely to have to run it many times. I started to poke around the internet a bit about how I might be able to speed things up. I had already used OpenMP to parallelize the offending for loop when I first learned about GPGPUputing. I was using my personal custom built desktopputer for this research which at the time had two Geforce 98GT cards in SLI. Looking at my options between CUDA and OpenCL CUDA seemed much more straightforward to use and I already had the NVidia cards anyway. Then I found out that in order topile CUDA code on Windows I needed a Visual Studio license but on Linux you could just use the freely available GNU Compiler Collection. Being a graduate student with limited financial resources the choice was clear. I downloaded Fedora 17 Scientific as I had briefly been introduced to Fedora a few years prior but hadn used it for much. I installed it over Windows 7 as the plan was to simply use my desktop for work and my Windows 7 laptop for basically everything else. Now it did take me some time to transition. The Windows way was very ingrained in me. I didn know what a package manager was. I didn know what a repository was. As far as I knew you went to websites downloaded drivers or programs you needed and installed them from an executable. Getting the proprietary drivers installed to use CUDA took a few days because of my naivety. Getting CUDA working took another couple of days. But eventually I did get it working. So everyday I would go into work do some coding on my desktop or setup some program to run for a while then use my laptop for all my otherputing needs like email writing documents looking up journal articles etc. Then the end of the day woulde and I need to shut down my laptop to go home. Many times this would involve waiting for twenty minutes while Windows installed updates. The next day my laptop would take about twenty minutes to boot up as Windows continued to install updates. I was getting pretty tired of it all. Meanwhile on my desktop I just had to click a button when I was notified that updates were available. When I went to shut down theputer there was no waiting. When I booted up the next time no waiting. I started to use my desktop more and more while leaving my laptop in my bag to save from being caught off guard with updates. The more I used Fedora the more I liked it. After about 6 months I setup my laptop to dual boot. Today I only use Windows to play native Windows games. I use Linux for everything else. Over time Ive gotten much savvier in the ways of Linux and Linux itself has improved greatly. I can now much more easily get my proprietary drivers installed. Getting CUDA up and running isn difficult at all. Printers are a breeze to setup. When my wife and I got a new printer last year it was easier to setup on Linux than Windows 1. Ive had Linux on 3 different desktops and 2 different laptops now. Ive never made special considerations when selecting hardware and the only difficulty Ive had was with a cheap Netgear USB wireless dongle and with the back light on my old HP laptop not turning back on after resuming. Both of those things are no longer problems. Overall I wouldn say that my experience with the transition was smooth but that was more likely due to my lack of research ahead of time. I had builtputers for years and installed many different Windows versions so I was a bit over confident going in. Had I taken a few days read up on things a bit more it probably would have gone much better. Now many distributions make things a breeze. Ive been considering switching to Manjaro for the ease of setting up proprietary drivers out of the boxbined with it being a rolling-release distribution meaning I shouldn have to worry about upgraded my OS at least once a year. Even with the rocky start I still found Linux to be a better user experience and was convinced to switch simply by using it when I had intended to only use it as a work OS. This wasn because of people telling me it was better than Windows. italic This wasn because I was some free (libre) open source software zealot.* italic This was because I had to use Linux for work and started to prefer it over Windows. italic horizontal-rule *I follow the belief thatputers are tools to get work done. You should use the software that lets you get that work done in the most efficient way possible whether that software be open source or proprietary. Im not saying that I disagree with the free (libre) open source software (FLOSS) philosophy. On the contrary I use open source software everyday. I write code for research that is freely available. I just think that if there is a proprietary solution that works better for a task or even just for a specific person performing that task they should also have the freedom to choose to use that proprietary solution.
What is the best way of combining multiple jpegs into one jpeg/PDF on Mac OS X?
Tobine multiple JPEG format s you want in your PDF right-click and choose open with Preview Step 2 In Preview's Sidebar drag the s to be included in the PDF document; otherwise only a single image may end up the PDF document Step 4 Then from the File menu choose Print Selected Images (or Print... in recent OS X versions) and then PDF Save as PDF
How can one convert docx file to pdf on linux while preserving the formatting?
My suggestion would be to use Adobe's hosted service at It'll do the conversion for you and keep the formatting accurate as well as convert bookmarks s cross-references etc.
How can I merge multiple images into one PDF file while making the PDF text related features still available?
you could use s. since the tool i available inmand line you can script with it. s into one. to convert into pdf convert can do that too. but if u have a mix of and images to be put in pdf i suggest latex would be a suitable option.