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How to define @Value as optional
... limited to plain strings as default values. You can use SPEL expressions, and a simple SPEL expression to return null is:
@Value("${myValue:#{null}}")
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What is a regular expression for a MAC Address?
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The standard (IEEE 802) format for
printing MAC-48 addresses in
human-friendly form is six groups of
two hexadecimal digits, separated by
hyphens - or colons :.
So:
^([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})$
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Make iframe automatically adjust height according to the contents without using scrollbar? [duplicat
...Window.document.documentElement.scrollHeight + 'px';
}
</script>
And change your iframe to this:
<iframe src="..." frameborder="0" scrolling="no" onload="resizeIframe(this)" />
As found on sitepoint discussion.
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if, elif, else statement issues in Bash
...at the issue with the following if statement is in regards to the elif and then . Keep in mind the printf is still under development I just haven't been able to test it yet in the statement so is more than likely wrong.
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Lost my schema.rb! Can it be regenerated?
...issues I stopped tracking schema.rb in git. Somehow I have stuffed this up and somewhere along the way my schema.rb file has disappeared.
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How to copy a directory using Ant
...ory tree but it is deprecated. My directory contains some sub-directories, and some of those contain files and others contain more sub-directories.
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How to remove all subviews of a view in Swift?
... I noticed that as well! I'll update the post once Xcode comes out of beta and the problem still persists.
– Bseaborn
Sep 1 '15 at 13:02
8
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Is it possible to set code behind a resource dictionary in WPF for event handling?
...r example in a usercontrol for a button you declare it in XAML. The event handling code for the button click is done in the code file behind the control. If I was to create a data template with a button how can I write the event handler code for it's button click within the resource dictionary.
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ObservableCollection not noticing when Item in it changes (even with INotifyPropertyChanged)
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Doesn't this all depend on your understanding of the term changed? This could mean that a property of one of the elements in the collection has changed (which is how I think you are interpreting it) or it could mean that one of the elements of the collection has b...
Best way of returning a random boolean value
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A declarative snippet using Array#sample:
random_boolean = [true, false].sample
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