大约有 40,000 项符合查询结果(耗时:0.0265秒) [XML]
How to throw an exception in C?
...m Wikipedia
#include <stdio.h>
#include <setjmp.h>
static jmp_buf buf;
void second(void) {
printf("second\n"); // prints
longjmp(buf,1); // jumps back to where setjmp
// was called - making setjmp now return 1
}
void firs...
Defining an array of anonymous objects in CoffeeScript
...underscore, variable used to omit not used variables:
a =
items: [
_ =
name: 'value1'
_ =
name: 'value2'
]
console.log JSON.stringify(a) will produce this:
{
"items":[
{
"name":"value1"
},{
"name":"value2"
}
]
}
...
Fastest way to check if a string matches a regexp in ruby?
...y
require 'benchmark'
str = "aacaabc"
re = Regexp.new('a+b').freeze
N = 4_000_000
Benchmark.bm do |b|
b.report("str.match re\t") { N.times { str.match re } }
b.report("str =~ re\t") { N.times { str =~ re } }
b.report("str[re] \t") { N.times { str[re] } }
b.report("re =~ str...
What are rvalues, lvalues, xvalues, glvalues, and prvalues?
...
answered Mar 4 '12 at 6:32
Nicol BolasNicol Bolas
354k4747 gold badges595595 silver badges784784 bronze badges
...
How add context menu item to Windows Explorer for folders [closed]
...nteger arguments to specify which icon to use. Example: %SystemRoot%\System32\shell32.dll,3
Display only on shift-click: adds an empty string value named Extended for key created at step 1
Customize menu entry label: change the value of default value for key created at step 1
Change menu entry locat...
What is the most robust way to force a UIView to redraw?
...000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 4...
Why use ICollection and not IEnumerable or List on many-many/one-many relationships?
... memory but about encapsulation. Consider: private IEnumerable<int> _integers = new List<int> { 1, 2, 3 }; uses the same memory as private List<int> _integers = new List<int> { 1, 2, 3 };
– phoog
Apr 11 '12 at 20:29
...
How do I capture SIGINT in Python?
...ignal like this:
#!/usr/bin/env python
import signal
import sys
def signal_handler(sig, frame):
print('You pressed Ctrl+C!')
sys.exit(0)
signal.signal(signal.SIGINT, signal_handler)
print('Press Ctrl+C')
signal.pause()
Code adapted from here.
More documentation on signal can be found here....
Quickly reading very large tables as dataframes
...umeric","integer")))
## user system elapsed
## 10.20 0.03 10.32
fread
require(data.table)
system.time(DT <- fread("test.csv"))
## user system elapsed
## 3.12 0.01 3.22
sqldf
require(sqldf)
system.time(SQLDF <- read.csv.sql("test...
Converting a string to a date in JavaScript
...
function stringToDate(_date,_format,_delimiter)
{
var formatLowerCase=_format.toLowerCase();
var formatItems=formatLowerCase.split(_delimiter);
var dateItems=_date.split(_delimiter);
var monthIndex=f...
