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Define preprocessor macro through CMake?
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For a long time, CMake had the add_definitions command for this purpose. However, recently the command has been superseded by a more fine grained approach (separate commands for compile definitions, include directories, and compiler options).
An example using the new add_com...
Get person's age in Ruby
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Use this, not the check-marked one which can't handle leap years
– bgcode
Jan 9 '13 at 21:08
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How to make a JSONP request from Javascript without JQuery?
...ng jQuery or other external library? I would like to use JavaScript itself and then parse the data and make it an object so I could use it. Do I have to use an external library? If not, how can I do it?
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Rails “validates_uniqueness_of” Case Sensitivity
...validates the uniqueness of 'foo' by asking the DB if that name exists yet and the DB says the name doesn't exist yet.
Process B does the same thing and gets the same response
Process A submits the insert statement for the new record and succeeds
If you have a database constraint requiring uniquenes...
In Markdown, what is the best way to link to a fragment of a page, i.e. #some_id?
...p (for example in a header:
## heading<a name="headin"></a>
and link to it using the markdown linkage:
[This is the link text](#headin)
or
[some text](#sometext)
Don't use <div> -- this will mess up the layout for many renderers.
(I have changed id= to name= above. See th...
CSS margin terror; Margin adds space outside parent element [duplicate]
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Add overflow:auto to your #page div.
jsFiddle example
And check out collapsing margins while you're at it.
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PEP 8, why no spaces around '=' in keyword argument or a default parameter value?
...hout spaces. It is easier to recognize that we are using keyword arguments and not assigning a variable to itself.
Also, parameters tend to go in the same line whereas assignments usually are each one in their own line, so saving space is likely to be an important matter there.
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Maximum length for MD5 input/output
...mum length of the string that can have md5 hashed? Or: If it has no limit, and if so what will be the max length of the md5 output value?
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When is a CDATA section necessary within a script tag?
Are CDATA tags ever necessary in script tags and if so when?
15 Answers
15
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In c++ what does a tilde “~” before a function name signify?
...scription from ibm.com:
Destructors are usually used to deallocate memory and do other cleanup for a class object and its class members when the object is destroyed. A destructor is called for a class object when that object passes out of scope or is explicitly deleted.
See https://www.ibm.com/sup...