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Comments in .gitignore?
Can you write comments in a .gitignore file?
2 Answers
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Double Negation in C++
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However, it's pointless in C++ or modern C, or where the result is only used in a boolean expression (as in the question). It was useful back when we had no bool type, to help avoid storing values other than 1 and 0 in boolean variables.
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GCD to perform task in main thread
...t come from any thread. When I get this callback, then I would like to perform a certain task on the main thread.
4 Answers...
How does mockito when() invocation work?
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The short answer is that in your example, the result of mock.method() will be a type-appropriate empty value; mockito uses indirection via proxying, method interception, and a shared instance of the MockingProgress class in order t...
Get cookie by name
...ay with one string (same value), in case token does not exist in a string, or an array with two strings , in case token is found in a string .
The first (left) element is string of what was before the token, and the second one (right) is what is string of what was after the token.
(NOTE: in case ...
How do I use 'git reset --hard HEAD' to revert to a previous commit? [duplicate]
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First, it's always worth noting that git reset --hard is a potentially dangerous command, since it throws away all your uncommitted changes. For safety, you should always check that the output of git status is clean (that is, empty) before using...
Setting environment variables for accessing in PHP when using Apache
...nv in PHP. I need to know how these environment variables need to be set for the application to work correctly. I am not sure how to set this up on Apache.
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What is the difference between double-ampersand (&&) and semicolon (;) in Linux Bash?
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The && operator is a boolean AND operator: if the left side returns a non-zero exit status, the operator returns that status and does not evaluate the right side (it short-circuits), otherwise it evaluates the right side and returns its e...
Open document with default OS application in Python, both in Windows and Mac OS
... same thing that happens when you double-click on the document icon in Explorer or Finder. What is the best way to do this in Python?
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What are the “standard unambiguous date” formats for string-to-date conversion in R?
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This is documented behavior. From ?as.Date:
format: A character string. If not specified, it will try
'"%Y-%m-%d"' then '"%Y/%m/%d"' on the first non-'NA' element,
and give an error if neither works.
as.Date("01 Jan 20...