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How to modify a global variable within a function in bash?
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When you use a command substitution (ie the $(...) construct), you are creating a subshell. Subshells inherit variables from their parent shells, but this only works one way - a subshell cannot modify the environment of its parent shell. Your v...
How does IPython's magic %paste work?
I want to copy already indented Python code / whole functions and classes into IPython. Everytime I try the indentation is screwed up and I get following error message:
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How can I get the current screen orientation?
I just want to set some flags when my orientation is in landscape so that when the activity is recreated in onCreate() i can toggle between what to load in portrait vs. landscape. I already have a layout-land xml that is handling my layout.
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dismissModalViewControllerAnimated deprecated
...tially, view controllers presented by this API are no longer always modal, and since they were adding a completion handler it was a good time to rename it.
In response to comment from Marc:
What's the best way to support all devices 4.3 and above? The new
method doesn't work in iOS4, yet the ...
What is the role of src and dist folders?
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src/ stands for source, and is the raw code before minification or concatenation or some other compilation - used to read/edit the code.
dist/ stands for distribution, and is the minified/concatenated version - actually used on pro...
HTTP Content-Type Header and JSON
...ur own.
The header is there so your app can detect what data was returned and how it should handle it. You need to look at the header, and if it's application/json then parse it as JSON.
This is actually how jQuery works. If you don't tell it what to do with the result, it uses the Content-Type ...
How does the Java 'for each' loop work?
...or any object that implements the Iterable interface.
Also, if the right-hand side of the for (:) idiom is an array rather than an Iterable object, the internal code uses an int index counter and checks against array.length instead. See the Java Language Specification.
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Ruby on Rails Callback, what is difference between :before_save and :before_create?
Could you explain in detail what the :before_save and :before_create Ruby on Rails callbacks are, and what they have to do with Rails validations? Does validation occur after :before_save or :before_create ?
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Freeze the top row for an html table only (Fixed Table Header Scrolling) [duplicate]
...pany to research a solution for this that could function in IE7+, Firefox, and Chrome.
After many moons of searching, trying, and frustration it really boiled down to a fundamental problem. For the most part, in order to gain the fixed header, you need to implement fixed height/width columns becaus...
Comments in command-line Zsh
I switched quite recently from Bash to Zsh on Ubuntu and I'm quite happy about it. However, there is something I really miss and I did not find how to achieve the same thing.
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