大约有 30,000 项符合查询结果（耗时：0.0263秒） [XML]
Is there a difference between /\s/g and /\s+/g?
...
In the first regem>x m>, each space character is being replaced, character by character, with the empty string.
In the second regem>x m>, each contiguous string of space characters is being replaced with the empty string because of the +.
However, ju...
String.IsNullOrWhiteSpace in LINQ Em>x m>pression
...;-- this won't work as intended (crazy I know ...)
– m>X m>DS
Dec 14 '18 at 13:59
...
Object of custom type as dictionary key
..._(self, other):
# Not strictly necessary, but to avoid having both m>x m>==y and m>x m>!=y
# True at the same time
return not(self == other)
The Python dict documentation defines these requirements on key objects, i.e. they must be hashable.
...
How to merge 2 JSON objects from 2 files using jq?
...e * operator. When given two objects, it will merge them recursively. For em>x m>ample,
jq -s '.[0] * .[1]' file1 file2
Important: Note the -s (--slurp) flag, which puts files in the same array.
Would get you:
{
"value1": 200,
"timestamp": 1382461861,
"value": {
"aaa": {
"value1": "v...
generate days from date range
...bles. The subquery generates dates for the last 10,000 days, and could be em>x m>tended to go as far back or forward as you wish.
select a.Date
from (
select curdate() - INTERVAL (a.a + (10 * b.a) + (100 * c.a) + (1000 * d.a) ) DAY as Date
from (select 0 as a union all select 1 union all select...
Is there a function to make a copy of a PHP array to another?
...confused by intricacies such as ArrayObject, which is an object that acts em>x m>actly like an array. Being an object however, it has reference semantics.
Edit: @AndrewLarsson raises a point in the comments below. PHP has a special feature called "references". They are somewhat similar to pointers in la...
How to find the largest file in a directory and its subdirectories?
We're just starting a UNIm>X m> class and are learning a variety of Bash commands. Our assignment involves performing various commands on a directory that has a number of folders under it as well.
...
What are rvalues, lvalues, m>x m>values, glvalues, and prvalues?
In C++03, an em>x m>pression is either an rvalue or an lvalue .
11 Answers
11
...
Fim>x m>ing the order of facets in ggplot
...vels=unique(.)))) %>% # convert to factor
ggplot() +
geom_bar(aes(m>x m> = type, y=amount, fill=type),
position="dodge", stat="identity") +
facet_grid(~ size)
You can apply this solution to arrange the bars within facets, too, though you can only choose a single, preferred order...
Convert character to ASCII code in JavaScript
... unlike String.fromCharCode( asciiNumVal ), stringInstance.charCodeAt( indem>x m> ) is not a static method of class String
– bobobobo
Sep 12 '12 at 19:09
...