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Is there a generator version of `string.split()` in Python?
... uses fairly minimal memory overhead.
def split_iter(string):
return (x.group(0) for x in re.finditer(r"[A-Za-z']+", string))
Demo:
>>> list( split_iter("A programmer's RegEx test.") )
['A', "programmer's", 'RegEx', 'test']
edit: I have just confirmed that this takes constant memo...
Get type of all variables
...the value rather than the character name of the object as returned by ls:
x <- 1L
typeof(ls())
[1] "character"
typeof(get(ls()))
[1] "integer"
Alternatively, for the problem as presented you might want to use eapply:
eapply(.GlobalEnv,typeof)
$x
[1] "integer"
$a
[1] "double"
$b
[1] "charact...
Printing object properties in Powershell
...
My solution to this problem was to use the $() sub-expression block.
Add-Type -Language CSharp @"
public class Thing{
public string Name;
}
"@;
$x = New-Object Thing
$x.Name = "Bill"
Write-Output "My name is $($x.Name)"
Write-Output "This won't work right: $x.Name"
G...
character showing up in files. How to remove them?
...
perl -pi~ -CSD -e 's/^\x{fffe}//' file1.js path/to/file2.js
I would assume the tool will break if you have other utf-8 in your files, but if not, perhaps this workaround can help you. (Untested ...)
Edit: added the -CSD option, as per tchrist's ...
Regular expression to get a string between two strings in Javascript
I have found very similar posts, but I can't quite get my regular expression right here.
11 Answers
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Nginx缓存解决方案：SRCache - 更多技术 - 清泛网 - 专注C/C++及内核技术
Nginx缓存解决方案：SRCache前些天帮别人优化PHP程序，搞得灰头土脸，最后黔驴技穷开启了FastCGI Cache，算是勉强应付过去了吧。不过FastCGI Cache不支持分布式缓存...前些天帮别人优化PHP程序，搞得灰头土脸，最后黔驴技穷开启了Fast...
Creating a constant Dictionary in C#
...urn 0;
case "dog": return 1;
case "elephant": return 3;
}
This is exactly what you want. And yes, I know, it's ugly.
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What is the correct file extension for GLSL shaders? [closed]
...'ve come across different file formats. I've seen people giving their vertex and fragment shaders .vert and .frag extensions. But I've also seen .vsh and .fsh extensions, and even both shaders together in a single .glsl file. So I'm wondering if there is a standard file format, or which wa...
How to declare array of zeros in python (or an array of a certain size) [duplicate]
...sts. Which leads to the List of lists changes reflected across sublists unexpectedly problem
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How to suppress scientific notation when printing float values?
...
'%f' % (x/y)
but you need to manage precision yourself. e.g.,
'%f' % (1/10**8)
will display zeros only.
details are in the docs
Or for Python 3 the equivalent old formatting or the newer style formatting
...