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How can I sanitize user input with PHP?
Is there a catchall function somewhere that works well for sanitizing user input for SQL injection and XSS attacks, while still allowing certain types of HTML tags?
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How to disable HTML button using JavaScript?
I’ve read that you can disable (make physically unclickable) an HTML button simply by appending disable to its tag, but not as an attribute, as follows:
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How to force ASP.NET Web API to always return JSON?
... use this method but the one below using GlobalConfiguration...Clear() actually works.
– seangwright
May 7 '15 at 20:52
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Pass in an array of Deferreds to $.when()
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To pass an array of values to any function that normally expects them to be separate parameters, use Function.prototype.apply, so in this case you need:
$.when.apply($, my_array).then( ___ );
See http://jsfiddle.net/YNGcm/21/
In ES6, you can use the ... spread operator ins...
Replacement for “rename” in dplyr
...which does keep it consistent with the rest of the dplyr functions. Personally, I don't think of it as a problem--you get used to new things quickly especially when it means a significant speedup in your data processing.
– vergilcw
Feb 3 '14 at 15:47
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What's the better (cleaner) way to ignore output in PowerShell? [closed]
...ad and > $null has about a 0.3% overhead.
Addendum 2017-10-16: I originally overlooked another option with Out-Null, the use of the -inputObject parameter. Using this the overhead seems to disappear, however the syntax is different:
Out-Null -inputObject ($(1..1000) | ?{$_ -is [int]})
And no...
How do I sort unicode strings alphabetically in Python?
... sorts by byte value by default, which means é comes after z and other equally funny things. What is the best way to sort alphabetically in Python?
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PHP完美实现GIF动画缩略图 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...');
$i = 0;
foreach ($image as $frame) {
$frame->writeImage('old_' . $i++ . '.gif');
}
?>
选择二：用ImageMagick提供的convert命令：
shell> convert old.gif old_%d.gif
结果得到GIF动画各帧示意图如下所示：
GIF动画各帧示意图
可以明显的看到...
shared_ptr指针被赋值后，原指针会引用清零、自动释放。 - C/C++ - 清泛IT...
shared_ptr指针被赋值后，原指针会引用清零、自动释放。
std::shared_ptr<int> intg;
void foo(std::shared_ptr<int> p)
{
intg = p; // 原指针释放，存储新的智能指针
//*(in...
Summarizing multiple columns with dplyr? [duplicate]
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The dplyr package contains summarise_all for this aim:
library(dplyr)
df %>% group_by(grp) %>% summarise_all(list(mean))
#> # A tibble: 3 x 5
#> grp a b c d
#> <int> <dbl> <dbl> <dbl> <dbl>
#>...