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Center a position:fixed element
...in: 5% auto; for this. Without position: fixed; it centers fine horizontally, but not vertically. After adding position: fixed; , it's even not centering horizontally.
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App Inventor 2 代码调试方式：App调试、问题排查方法 · App Inventor 2 中文网
...navbar .nav-link .mdi, .navbar .dropdown-item .mdi { margin-right: 6px; opacity: .7; } 创建 Apps 文档 文档首页 内置块参考文档 组件参考文档 拓展参考文档 概念参考文档 IoT 参考文档 技术和其他指南...
jquery selector for id starts with specific text [duplicate]
...re 'attribute' ends with 'Dialog'
$("[attribute$='Dialog']");
// Selects all divs where attribute is NOT equal to value
$("div[attribute!='value']");
// Select all elements that have an attribute whose value is like
$("[attribute*='value']");
// Select all elements that have an attribute w...
Detecting WPF Validation Errors
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This post was extremely helpful. Thanks to all who contributed. Here is a LINQ version that you will either love or hate.
private void CanExecute(object sender, CanExecuteRoutedEventArgs e)
{
e.CanExecute = IsValid(sender as DependencyObject);
}
private bool IsV...
When should I use Lazy?
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You typically use it when you want to instantiate something the first time its actually used. This delays the cost of creating it till if/when it's needed instead of always incurring the cost.
Usually this is preferable when the obj...
Getting all names in an enum as a String[]
...<?>> e) {
return Arrays.toString(e.getEnumConstants()).replaceAll("^.|.$", "").split(", ");
}
That you would call like this:
String[] names = getNames(State.class); // any other enum class will work
If you just want something simple for a hard-coded enum class:
public static Strin...
Shrink a YouTube video to responsive width
...be videos or is there something that I can add to the code to make it go smaller?
10 Answers
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Formatting floats without trailing zeros
...ptimization is bad, but it's because the OP's trick requires you to remove all zeroes THEN all decimals and then NOT MORE ZEROS. Gabriel's approach just removes all zeros and periods until it hits something else.
– Scott Stafford
May 11 at 14:47
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Get all non-unique values (i.e.: duplicate/more than one occurrence) in an array
... do this? I just need to find what the duplicated values are - I don't actually need their indexes or how many times they are duplicated.
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Draw a perfect circle from user's touch
I have this practice project that allows the user to draw on the screen as they touch with their fingers. Very simple App I did as exercise way back.
My little cousin took the liberty of drawing things with his finger with my iPad on this App (Kids drawings: circle, lines, etc, whatever came to his ...