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Swift variable decorations with “?” (question mark) and “!” (exclamation mark)
I understand that in Swift all variables must be set with a value, and that by using optionals we can set a variable to be set to nil initially.
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Java 8 functional interface with no arguments and no return value
What is the Java 8 functional interface for a method that takes nothing and returns nothing?
3 Answers
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How is it possible to declare nothing inside main() in C++ and yet have a working application after
...uted where you can do anything — in this case, compute fibonacci numbers and print them! A similar thing I've shown in the following question (which I had asked long back):
Is main() really start of a C++ program?
Note that such code is not safe and should be best avoided in general. For exam...
Merge up to a specific commit
...med newbranch from the master branch in git. Now I have done some work and want to merge newbranch to master ; however, I have made some extra changes to newbranch and I want to merge newbranch up to the fourth-from-the-last commit to master .
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How to calculate the number of days between two dates? [duplicate]
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I tested this with 2015-02-1 to 2015-03-01 and got 31 days. There's something wrong here... EDIT: Okay yeah.. javascript months are from 0-12 so if you're getting the input from a jquery datepicker or a regular normal date, subtract 1 form the month
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How to set the font style to bold, italic and underlined in an Android TextView?
I want to make a TextView 's content bold, italic and underlined. I tried the following code and it works, but doesn't underline.
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JavaScript arrays braces vs brackets
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The first and third are equivalent and create a new array. The second creates a new empty object, not an array.
var myArray = []; //create a new array
var myArray = {}; //creates **a new empty object**
var myArray = new Array(); //cre...
Should *.xccheckout files in Xcode5 be ignored under VCS?
...lows Xcode to know what all of the components that make up a workspace are and where to get them.
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`if __name__ == '__main__'` equivalent in Ruby
...m the Ruby I've seen out in the wild (granted, not a ton), this is not a standard Ruby design pattern. Modules and scripts are supposed to stay separate, so I wouldn't be surprised if there isn't really a good, clean way of doing this.
EDIT: Found it.
if __FILE__ == $0
foo()
bar()
end
Bu...
How to have an auto incrementing version number (Visual Studio)? [duplicate]
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If you add an AssemblyInfo class to your project and amend the AssemblyVersion attribute to end with an asterisk, for example:
[assembly: AssemblyVersion("2.10.*")]
Visual studio will increment the final number for you according to these rules (thanks galets, I had that ...