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What is the benefit of using $() instead of backticks in shell scripts?
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The major one is the ability to nest them, commands within commands, without losing your sanity trying to figure out if some form of escaping will work on the backticks.
An example, though somewhat contrived:
deps=$(find /dir -name $(ls -1tr 201112...
How can I get a web site's favicon?
...le enough question: I've create a small app that is basically just a favourites that sits in my system tray so that I can open often-used sites/folders/files from the same place. Getting the default icons from my system for known file types isn't terribly complicated, but I don't know how to get the...
Using Default Arguments in a Function
...ou can make a call like foo('blah', null, 'non-default y value'); and have it work as you want, where the second parameter $x still gets its default value.
With this method, passing a null value means you want the default value for one parameter when you want to override the default value for a par...
Rails: Why does find(id) raise an exception in rails? [duplicate]
If there is no user with an id of 1 in the database, trying User.find(1) will raise an exception.
2 Answers
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Why do Lua arrays(tables) start at 1 instead of 0?
... indexing start at 1? I have read (as many others did) this great paper . It seems to me a strange corner of a language that is very pleasant to learn and program. Don't get me wrong, Lua is just great but there has to be an explanation somewhere. Most of what I found (on the web) is just saying th...
What is a servicebus and when do I need one?
...e heard talk about the NServiceBus , but I haven't really understood what it is. They claim to be "The most popular open-source service bus for .net".
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Apk location in New Android Studio
...g new Android Studio and cant find the APK of the application in IDE,where it actually locates?
31 Answers
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What is the best place for storing uploaded images, SQL database or disk file system? [closed]
I'm writing an application that allows users to upload images onto the server. I expect about 20 images per day all jpeg and probably not edited/resized. (This is another question, how to resize the images on the server side before storing. Maybe someone can please drop a .NET resource for that in t...
When do you use POST and when do you use GET?
... POST for destructive actions such as creation (I'm aware of the irony), editing, and deletion, because you can't hit a POST action in the address bar of your browser. Use GET when it's safe to allow a person to call an action. So a URL like:
http://myblog.org/admin/posts/delete/357
Should bring ...
How can I create a directly-executable cross-platform GUI app using Python?
...op and web applications, thus I conclude that there is some way to compile it into an executable for Mac, Windows and Linux.
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