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How do I implement basic “Long Polling”?
...php
<?php
if(rand(1,3) == 1){
/* Fake an error */
header("HTTP/1.0 404 Not Found");
die();
}
/* Send a string after a random number of seconds (2-10) */
sleep(rand(2,10));
echo("Hi! Have a random number: " . rand(1,10));
?>
Note: With a real site, running this on a regular web-...
How to check if a value exists in an array in Ruby
...
There is an in? method in ActiveSupport (part of Rails) since v3.1, as pointed out by @campaterson. So within Rails, or if you require 'active_support', you can write:
'Unicorn'.in?(['Cat', 'Dog', 'Bird']) # => false
OTOH, there is no in operator or #in? method in Ruby itself, even...
Forced naming of parameters in Python
...ed Jun 27 '18 at 11:59
Jean-François Corbett
33.6k2525 gold badges124124 silver badges172172 bronze badges
answered Jan 12 '13 at 23:18
...
@Override is not allowed when implementing interface method
...gt;maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugi...
How can I represent an 'Enum' in Python?
...hon 3.4 as described in PEP 435. It has also been backported to 3.3, 3.2, 3.1, 2.7, 2.6, 2.5, and 2.4 on pypi.
For more advanced Enum techniques try the aenum library (2.7, 3.3+, same author as enum34. Code is not perfectly compatible between py2 and py3, e.g. you'll need __order__ in python 2)....
How to create JSON string in C#
...
JavaScriptSerializer is part of ASP.NET Ajax 1.0 if you want to use it from .NET 2.0.
– Joe Chung
Jun 29 '09 at 0:58
2
...
Difference between Role and GrantedAuthority in Spring Security
...ind and replace" and i am back on track!
– Jørgen Skår Fischer
Jan 29 '16 at 23:20
12
This is a...
UILongPressGestureRecognizer gets called twice when pressing down
... action:@selector(handleLongPress:)];
longPress.minimumPressDuration = 1.0;
[myView addGestureRecognizer:longPress];
[longPress release];
...
- (void)handleLongPress:(UILongPressGestureRecognizer *)gesture {
if(UIGestureRecognizerStateBegan == gesture.state) {
// Called on start o...
How to import module when module name has a '-' dash or hyphen in it?
...
Starting from Python 3.1, you can use importlib :
import importlib
foobar = importlib.import_module("foo-bar")
( https://docs.python.org/3/library/importlib.html )
s...
ros 基本调试 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...数据传输速率）
2.2KDBG
2.3GDB
2.4WINDBG
3.生成更多输出
3.1编译时开启verbosity功能
3.1.1 reactos类型
3.1.1.1加入我们自己的debug消息
3.1.2 wine的类型
3.2 运行时开启verbosity
3.3 进入内置的内核调试器
3.3.1 动态调试
3.3.1.1 在用户态异...