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Is it safe to check floating point values for equality to 0?
...e sample, that test is okay. But what about this:
bool b = ( 10.0 * .1 - 1.0 == 0.0 );
Remember that .1 is a repeating decimal in binary and can't be represented exactly. Then compare that to this code:
double d1 = 10.0 * .1; // make sure the compiler hasn't optimized the .1 issue away
bool b ...
How to Debug Variables in Smarty like in PHP var_dump()
...
You can use {php} tags
Method 1 (won't work in Smarty 3.1 or later):
{php}
$var =
$this->get_template_vars('var');
var_dump($var);
{/php}
Method 2:
{$var|@print_r}
Method 3:
{$var|@var_dump}
...
PHP DOMDocument loadHTML not encoding UTF-8 correctly
...om was just as quick I first tried the following:
$dom = new DomDocument('1.0', 'UTF-8');
if ($dom->loadHTMLFile($url) == false) { // read the url
// error message
}
else {
// process
}
This failed spectacularly in preserving UTF-8 encoding despite the proper meta tags, php settings an...
如何抓住痛点做出让用户尖叫的产品 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...察觉的情况下，体验到产品的优化改进。比如在微信（iOS版，Android版没有试用，不是很确定，理论上体验是会一致的）中有这样一个功能，当你做了手机屏幕截图的操作后，打开微信的任一聊天窗口，选择“+”号发送其他内容...
dispatch_after - GCD in Swift?
...te that you can write the deadlineTime declaration as DispatchTime.now() + 1.0 and get the same result because the + operator is overridden as follows (similarly for -):
func +(time: DispatchTime, seconds: Double) -> DispatchTime
func +(time: DispatchWalltime, interval: DispatchTimeInterval) -&...
Eclipse RCP Plug-in开发自学教程（Eclipse3.6） - 文档下载 - 清泛网 - ...
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3.1 概述 ............................................................................................................................................22
3.2 通过编码添加 ..................................................
How can I convert byte size into a human-readable format in Java?
...27 B
999: 999 B 999 B
1000: 1.0 kB 1000 B
1023: 1.0 kB 1023 B
1024: 1.0 kB 1.0 KiB
1728: 1.7 kB 1.7 KiB
110592: 110.6 kB 108.0 KiB
7077888: 7.1 M...
How to create a UIView bounce animation?
... (value: Bool) in
})
usingSpringWithDamping 0.0 == very bouncy. 1.0 makes it smoothly decelerate without overshooting.
initialSpringVelocity is, roughly, "desired distance, divided by desired seconds". 1.0 corresponds to the total animation distance traversed in one second. Example, tot...
How do you compare two version Strings in Java?
...bers. some apps will include build numbers, and might include things like 1.0.1b for beta/etc.
– John Gardner
Oct 13 '08 at 18:46
2
...
Search for a string in Enum and return the Enum
...for me. Maybe it depends on the version you are using? I'm using .NET core 3.1
– Vinni
Apr 7 at 21:06
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