大约有 46,000 项符合查询结果（耗时：0.0541秒） [XML]
How to generate all permutations of a list?
...re using an older Python (<2.6) for some reason or are just curious to know how it works, here's one nice approach, taken from http://code.activestate.com/recipes/252178/:
def all_perms(elements):
if len(elements) <=1:
yield elements
else:
for perm in all_perms(elemen...
python's re: return True if string contains regex pattern
...similar case where I want to search for an exact string (xyz) and want to know which is a more efficient way to do this, should I use python's 'xyz' in given_text or use re.compile(r'xyz').search(given_text) ?
– bawejakunal
May 4 '16 at 9:01
...
How to make an anchor tag refer to nothing?
...
@eugene this question is 3 years old now, but IE used to make images disappear when surrounded by a link to a void function. Not sure when it was fixed, but it works in IE10, which is all I have installed. I personally now use <a href="javascript:;">
...
The order of elements in Dictionary
...
If you want the elements ordered, use an OrderedDictionary. An ordinary hastable/dictionary is ordered only in some sense of the storage layout.
shar...
O(nlogn) Algorithm - Find three evenly spaced ones within binary string
...e, we have the list L = [1, 2, 4, 5, 8]. This step is O(n). The problem is now to find an arithmetic progression of length 3 in L, i.e. to find distinct a, b, c in L such that b-a = c-b, or equivalently a+c=2b. For the example above, we want to find the progression (2, 5, 8).
Make a polynomial p wit...
How can strings be concatenated?
...
What happens if you want a multi line string concatenation?
– pyCthon
Nov 28 '13 at 19:52
...
Have Grunt generate index.html for different setups
..../src/tmpl/index.html',
dest : '../<%= pkg.version %>/<%= now %>/<%= ver %>/index.html',
options : {
context : {
name : '<%= pkg.name %>',
version : '<%= pkg.version %>',
now : '<%= now %>...
warning: incompatible implicit declaration of built-in function ‘xyz’
... In an implicit declaration, the return type is int if I recall correctly. Now, GCC has built-in definitions for some standard functions. If an implicit declaration does not match the built-in definition, you get this warning.
To fix the problem, you have to declare the functions before using them...
Detect if called through require or directly by command line
...
@Kevin I don't know about doing this with require(), but you could maybe do it with either importing the file then running eval on it, or by running require('child_process').exec('node the_file.js')
– MalcolmOcean
...
Random color generator
...
@Mohsen, FYI every now and then your code produces invalid 5 digit number
– rochal
Nov 5 '11 at 18:05
6
...