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How can I determine if a variable is 'undefined' or 'null'?
...}
Because null == undefined is true, the above code will catch both null and undefined.
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NSDate beginning of day and end of day
...onents.timeZone = NSTimeZone(name: "GMT")
– Tom Bevelander
Sep 5 '16 at 0:45
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How can I represent an 'Enum' in Python?
... in PEP 435. It has also been backported to 3.3, 3.2, 3.1, 2.7, 2.6, 2.5, and 2.4 on pypi.
For more advanced Enum techniques try the aenum library (2.7, 3.3+, same author as enum34. Code is not perfectly compatible between py2 and py3, e.g. you'll need __order__ in python 2).
To use enum34, do...
C# generic type constraint for everything nullable
...time check, you can check if the type is not a reference or nullable type, and throw an exception if that's the case.
I realise that only having a runtime check may be unacceptable, but just in case:
public class Foo<T>
{
private T item;
public Foo()
{
var type = typeof(...
How to clone all remote branches in Git?
I have a master and a development branch, both pushed to GitHub . I've clone d, pull ed, and fetch ed, but I remain unable to get anything other than the master branch back.
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POST JSON to API using Rails and HTTParty
... to my external ticket management system, squishlist.com. They have an api and instructions as follows. You need to authenticate and get a token and then submit the ticket with the token. From squishlist.
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Calling a function of a module by using its name (a string)
...e in a Python program. For example, let's say that I have a module foo , and I have a string whose content is "bar" . What is the best way to call foo.bar() ?
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Can you center a Button in RelativeLayout?
...nter a button in relative layout, is this possible? I've tried the Gravity and Orientation functions but they don't do anything.
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GIT commit as different user without email / or only email
...s a different user, but i do not have a valid email address, following command is not working for me:
10 Answers
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How to get a substring between two strings in PHP?
... one but really don't think it's the best way to go). Thinking of strpos and substr functions.
Here's an example:
32 A...