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nonlocal keyword in Python 2.x
... to implement a closure in Python 2.6 and I need to access a nonlocal variable but it seems like this keyword is not available in python 2.x. How should one access nonlocal variables in closures in these versions of python?
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What's the difference between --general-numeric-sort and --numeric-sort options in gnu sort
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General numeric sort compares the numbers as floats, this allows scientific notation eg 1.234E10 but is slower and subject to rounding error (1.2345678 could come after 1.2345679), numeric sort is just a regular alphabetic sort that knows 10 comes after 9.
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6个变态的C语言Hello World程序 - 创意 - 清泛网 - 专注C/C++及内核技术
...e<stdio.h>
#define __(a) goto a;
#define ___(a) putchar(a);
#define _(a,b) ___(a) __(b);
main()
{ _:__(t)a:_('r',g)b:_('$',p)
c:_('l',f)d:_(' ',s)e:_('a',s)
f:_('o',q)g:_('l',h)h:_('d',n)
i:_('e',w)j:_('e',x)k:_('\n',z)
l:_('H',l)m:_('X',i)n:_('!',k)
o:_('z',q)p:_('q',b)q:_(',',d)
r...
Convert string to title case with JavaScript
Is there a simple way to convert a string to title case? E.g. john smith becomes John Smith . I'm not looking for something complicated like John Resig's solution , just (hopefully) some kind of one- or two-liner.
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Remove carriage return in Unix
...an carriage returns (CR, "\r", 0x0d) at the ends of lines rather than just blindly within a file (you may have them in the middle of strings for all I know). Using this test file with a CR at the end of the first line only:
$ cat infile
hello
goodbye
$ cat infile | od -c
0000000 h e l l ...
VIM + Syntastic: how to disable the checker?
I'm using Syntastic which is enabled for my HTML files. Since I have a very big file with "validator w3" checkers enabled, GVIM or VIM became very slow while saving the file (:w).
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What is tail call optimization?
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Tail-call optimization is where you are able to avoid allocating a new stack frame for a function because the calling function will simply return the value that it gets from the called function. The most common use is tail-recursion, where a recursive function writt...
e.printStackTrace equivalent in python
...ow that print(e) (where e is an Exception) prints the occurred exception
but, I was trying to find the python equivalent of Java's e.printStackTrace() that exactly traces the exception to what line it occurred and prints the entire trace of it.
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Linq to Entities join vs groupjoin
I have web searched but I still cant find a simple answer. Can someone please explain (in simple English) what a GroupJoin is? How is it different from a regular inner Join ? Is it commonly used? Is it only for method syntax? What about query syntax? A c# code example would be nice.
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How to use arguments from previous command?
...nt of the previous command.
To specify an argument, press Escape and a number or hold Alt and press a number. You can do Alt--to begin specifying a negative number then release Alt and press the digit (this will count from the end of the list of arguments.
Example:
Enter the following command
$ ...