大约有 13,908 项符合查询结果（耗时：0.0260秒） [XML]
How to disable GCC warnings for a few lines of code
...n GCC you can override per file compiler flags . How can I do this for "next line", or with push/pop semantics around areas of code using GCC?
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When to use self over $this?
...embers,
use self::$member for static members.
Full Answer
Here is an example of correct usage of $this and self for non-static and static member variables:
<?php
class X {
private $non_static_member = 1;
private static $static_member = 2;
function __construct() {
echo $...
How can I process each letter of text using Javascript?
...f the []'s. for more on why you should use charAt vs [], see string.charAt(x) or string[x]
– Julian Soro
May 29 '14 at 20:28
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Batch file: Find if substring is in string (not in a file)
..., you can use substitutions and check against the original string:
if not x%str1:bcd=%==x%str1% echo It contains bcd
The %str1:bcd=% bit will replace a bcd in str1 with an empty string, making it different from the original.
If the original didn't contain a bcd string in it, the modified version...
How to do a PUT request with curl?
...
Using the -X flag with whatever HTTP verb you want:
curl -X PUT -d arg=val -d arg2=val2 localhost:8080
This example also uses the -d flag to provide arguments with your PUT request.
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Difference between String replace() and replaceAll()
...ring 's replace() and replaceAll() methods,
other than later uses regex? For simple substitutions like, replace . with / ,
is there any difference?
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Python add item to the tuple
...items to append
a = ('2',)
items = ['o', 'k', 'd', 'o']
l = list(a)
for x in items:
l.append(x)
print tuple(l)
gives you
>>>
('2', 'o', 'k', 'd', 'o')
The point here is: List is a mutable sequence type. So you can change a given list by adding or removing elements. Tuple is an...
pandas read_csv and filter columns with usecols
...s.read_csv when I filter the columns with usecols and use multiple indexes.
5 Answers
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How to check if all of the following items are in a list?
...d, that there is related question, about how to find if at least one item exists in a list:
How to check if one of the following items is in a list?
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