大约有 32,000 项符合查询结果（耗时：0.0296秒） [XML]
Obfuscated C Code Contest 2006. Please explain sykes2.c
...there's some string arithmetic going on, as well as taking advantage of an array subscript being bidirectional: a[b] is the same as b[a] for character arrays.
7[__TIME__ - (argc/8)%8]
This will select one of the first 8 characters in __TIME__. This is then indexed into [">'txiZ^(~z?"-48] (0-...
How do I break a string over multiple lines?
...ok right - for example, an innocuous colon : within one string in a string array makes YAML interpret it as an array of objects. It violates the principle of least astonishment.
– Vicky Chijwani
Jan 31 '18 at 14:48
...
Can git operate in “silent mode”?
...louds)
fetch: silence git-gc if --quiet is given
builtin/fetch.c:
argv_array_pushl(&argv_gc_auto, "gc", "--auto", NULL);
if (verbosity < 0)
argv_array_push(&argv_gc_auto, "--quiet");
run_command_v_opt(argv_gc_auto.argv, RUN_GIT_CMD);
...
Remove everything after a certain character
...
split returns an array (in this case it has two elements, 0 and 1), and [0] gets the first element of the returned array.
– kapa
Apr 12 '11 at 8:45
...
Removing an item from a select box
... remove an item by index, value, or regex.
removeOption(index/value/regex/array[, selectedOnly])
Remove an option by
- index: $("#myselect2").removeOption(0);
- value: $("#myselect").removeOption("Value");
- regular expression: $("#myselect").removeOption(/^val/i);
- array $("#myselect").removeOpt...
Looking for a good world map generation algorithm [closed]
..." its own land tiles (as opposed to simply acting as a generator for a map array) and essentially sits on or acts as its own plate, it wouldn't be that hard to implement. I'm going to have to try this now :)
– nathanchere
Apr 16 '10 at 5:01
...
How to get the type of a variable in MATLAB?
...myName
>> class(myName)
ans =
'char'
>> % Define a cell array
>> cellArr = {'This ', 'is ', 'a ', 'big chance to learn ', 'MATLAB.'}; % Cell array
>>
>> class(cellArr)
ans =
'cell'
>> % Get more details including type
>> whos num
Name S...
How to convert a ruby hash object to JSON?
... an arbitrary class should be serialized to JSON. They did it for Hash and Array classes in json gem, but your class Person is just a plain Object. But you can inherit Hash instead. You can open a new question if you don't manage.
– Mladen Jablanović
Jul 6 '10...
New line in JavaScript alert box
...ave to transform special characters to their escape sequences
$patterns = array("/\\\\/", '/\n/', '/\r/', '/\t/', '/\v/', '/\f/');
$replacements = array('\\\\\\', '\n', '\r', '\t', '\v', '\f');
$string = preg_replace($patterns, $replacements, $string);
echo "<script>alert(\"$string\")</scr...
Selecting with complex criteria from pandas.DataFrame
...
>>> df.loc[(df["B"] > 50) & (df["C"] == 900), "A"].values
array([5, 8], dtype=int64)
>>> df.loc[(df["B"] > 50) & (df["C"] == 900), "A"] *= 1000
>>> df
A B C
0 9 40 300
1 9 70 700
2 5000 70 900
3 8000 80 900
4 7 50 200
5 ...