大约有 43,100 项符合查询结果（耗时：0.0340秒） [XML]
Remove multiple whitespaces
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Note that in PHP \s not including "vertical tab" chr(11). To include it too you need to use space character class: [[:space:]]+ php.net/manual/en/regexp.reference.character-classes.php
– Yaroslav
Oct 29 '13 at 18:49
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For every character in string
...abcde";
int len = strlen(str);
for (int i = 0; i < len; i++)
{
char chr = str[i];
//do something....
}
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Why doesn't this code simply print letters A to Z?
... answered Nov 4 '10 at 15:42
Christian C. SalvadóChristian C. Salvadó
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Iterating each character in a string using Python
...re, to increment each character value:
>>> ''.join(map(lambda x: chr(ord(x)+1), "HAL"))
'IBM'
or more generally:
>>> ''.join(map(my_function, my_string))
where my_function takes a char value and returns a char value.
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Useful code which uses reduce()? [closed]
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I think reduce is a silly command. Hence:
reduce(lambda hold,next:hold+chr(((ord(next.upper())-65)+13)%26+65),'znlorabggbbhfrshy','')
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Why shouldn't I use mysql_* functions in PHP?
...roblems fixed.
Lacks an OO interface
Doesn't support:
Non-blocking, asynchronous queries
Prepared statements or parameterized queries
Stored procedures
Multiple Statements
Transactions
The "new" password authentication method (on by default in MySQL 5.6; required in 5.7)
Any of the new functional...
Convert a list of characters into a string
...then convert to string where map(ord,a) is unnecessary, but join needs map(chr,a). Here's my benchmark pastebin.com/1sKFm8ma
– bigeagle
Apr 8 '12 at 15:11
15
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Replace all 0 values to NA
... 4 x 4
col1 col2 col3 col4
<dbl> <dbl> <dbl> <chr>
1 1 NA 1 a
2 2 2 NA b
3 3 3 3 c
4 NA 4 NA d
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Filter dict to contain only certain keys?
...st in Python 2.7.6, with a dictionary of 26 items (timeit(..., setup="d = {chr(x+97):x+1 for x in range(26)}")), depending on how many items are being filtered out (filtering out consonant keys is faster than filtering out vowel keys because you're looking up fewer items). The difference in performa...
Remove characters except digits from string using Python?
...n table (a string of length 256) which in this case is the same as ''.join(chr(x) for x in range(256)) (just faster to make;-). .translate applies the translation table (which here is irrelevant since all essentially means identity) AND deletes characters present in the second argument -- the key pa...