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Is there a generator version of `string.split()` in Python?
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The most efficient way I can think of it to write one using the offset parameter of the str.find() method. This avoids lots of memory use, and relying on the overhead of a regexp when it's not needed.
[edit 2016-8-2: updated this to optionally support regex separators]
def isplit(source,...
What are all the escape characters?
I know some of the escape characters in Java, e.g.
4 Answers
4
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What are “first class” objects?
...', '__rrshift__', '__rshift__', '__rsub__', '__rtruediv__', '__rxor__', '__setattr__', '__str__', '__sub__', '__truediv__', '__xor__']
Because everything's a first-class object in Python, there are relatively few obscure special cases.
In Java, for example, there are primitive types (int, bool,...
How to only get file name with Linux 'find'?
I'm using find to all files in directory, so I get a list of paths. However, I need only file names. i.e. I get ./dir1/dir2/file.txt and I want to get file.txt
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Recursively look for files with a specific extension
...the extensions you want.
The extended option is extglob which needs to be set using the shopt option as below. The options are enabled with the -s support and disabled with he -u flag. Additionally you could use couple of options more i.e. nullglob in which an unmatched glob is swept away entirely,...
Windows recursive grep command-line
... the filename if a file contains a match.
/O Prints character offset before each matching line.
/P Skip files with non-printable characters.
/OFF[LINE] Do not skip files with offline attribute set.
/A:attr Specifies color attribute with two hex digits. See "color /?"
/F:...
Why does changing the sum order returns a different result?
...; 1027 - 1023 = 4
404 => 0|100 0000 0100| => 1028 - 1023 = 5
First set of additions
The second number (y) is of smaller magnitude. When adding these two numbers to get x + y, the last 2 bits of the second number (01) are shifted out of range and do not figure into the calculation.
The sec...
Writing a dict to txt file and reading it back?
...lems using this method on some complex dictionaries such has having nested set values (e.g. d = {"one": {"1" : 1, "a": {"i"}}}). Therefore, I recommend @blender's pickle method that works in my case.
– Gürol Canbek
Jun 2 '16 at 8:02
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What is the shortest function for reading a cookie by name in JavaScript?
...decodeURIComponent should not be used; doing so assumes that the code that set the cookie also encoded it using these functions.
The regular expression approach gets problematic if the cookie name can contain special characters. jQuery.cookie works around this issue by encoding the cookie name (act...
How do I drop a foreign key constraint only if it exists in sql server?
... if we find it, the name will not be null
if @name is not null
begin
set @sql = 'alter table Badges drop constraint ' + replace(@name,']', ']]')
exec (@sql)
end
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