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Is there a performance difference between a for loop and a for-each loop?
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if arguments is equal to this string, define a variable like this string
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How do I animate constraint changes?
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Ruby: Merging variables in to a string
...ould use a replace for 1 or two varibles, but this has the potential to be more. Any thoughts?
– FearMediocrity
Feb 16 '09 at 22:25
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Add and remove multiple classes in jQuery
...ss1").addClass("class2").addClass("class3");
Very similar also to remove more classes:
$("p").removeClass("class1 class2 class3");
or in cascade:
$("p").removeClass("class1").removeClass("class2").removeClass("class3");
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What are Unwind segues for and how do you use them?
... method is used when you create the unwind segue in the storyboard. Furthermore, this method is called just before the unwind segue is performed. You can get the source view controller from the passed UIStoryboardSegue parameter to interact with the view controller that initiated the segue (e.g. to ...
What is mattr_accessor in a Rails module?
...e Avdi mentions.
However, cattr_accessor doesn't work in a module, so they more or less copied the code over to work for modules also.
Additionally, sometimes you might want to write a class method in a module, such that whenever any class includes the module, it gets that class method as well a...
How do I combine two data frames?
...can also use pd.concat, which is particularly helpful when you are joining more than two dataframes:
bigdata = pd.concat([data1, data2], ignore_index=True, sort=False)
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Boolean literals in PowerShell
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To add more information to already existing answers: The boolean literals $true and $false also work as is when used as command line parameters for PowerShell (PS) scripts. For the below PS script which is stored in a file named ins...
iPhone - Get Position of UIView within entire UIWindow
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