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Convert a Unicode string to a string in Python (containing extra symbols)
...oblem of not being able to save unicode to a file sounds like an entirely different issue worthy of a separate question
– Mark Roddy
Jul 30 '09 at 16:03
5
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How to match all occurrences of a regex
...r36 ar0und"
str.scan(/\d+/)
#=> ["54", "3", "1", "7", "3", "36", "0"]
If you want, MatchData, which is the type of the object returned by the Regexp match method, use:
str.to_enum(:scan, /\d+/).map { Regexp.last_match }
#=> [#<MatchData "54">, #<MatchData "3">, #<MatchData "1...
How to check “hasRole” in Java Code with Spring Security?
...Wrapper instance. You could improve it explaining how to obtain it and clarifying the answer itself a little bit more.
– Xtreme Biker
Feb 23 '15 at 9:59
3
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How to check for an undefined or null variable in JavaScript?
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You have to differentiate between cases:
Variables can be undefined or undeclared. You'll get an error if you access an undeclared variable in any context other than typeof.
if(typeof someUndeclaredVar == whatever) // works
if(someUnd...
Unzipping files in Python
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what if the contents of the .zip archive are same, in all .zip archives? how to rename the content before extracting? example: 1.zip 2.zip.. all contain content.txt : extract all like 1content.txt 2content.txt?
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Why a function checking if a string is empty always returns true? [closed]
I have a function isNotEmpty which returns true if the string is not empty and false if the string is empty. I've found out that it is not working if I pass an empty string through it.
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Where is Python's sys.path initialized from?
...al
location on the filesystem based on what the operating system tells
it. If the OS just says "python" is running, it finds itself in $PATH.
It resolves any symbolic links. Once it has done this, the path of
the executable that it finds is used as the value for sys.executable, no ifs,
ands, or buts...
python list by value not by reference [duplicate]
...e. an assertion should fail) in a new question? Most likely, you're not modifying the list itself, but its elements. Create a deep copy if you want a new list whose elements are copies as well.
– phihag
May 28 '17 at 20:28
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SQL query to get all values a enum can have
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If you want an array:
SELECT enum_range(NULL::myenum)
If you want a separate record for each item in the enum:
SELECT unnest(enum_range(NULL::myenum))
Additional Information
This solution works as expected even if ...
XPath OR operator for different nodes
...f the root node find all ones named 'book' then find also all named 'cd'. If in the descendance of the root node there are only book nodes,your node-set will contain book nodes only. If in the descendance of the root node there are only cd nodes,your node-set will contain cd nodes only. If in the...