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Ant task to run an Ant target only if a file exists?
...der style, this
gives you additional flexibility,
because you can override the condition
from the command line or parent
scripts:
<target name="-check-use-file" unless="file.exists">
<available property="file.exists" file="some-file"/>
</target>
<target name="use-fi...
JavaScript: empty array, [ ] evaluates to true in conditional structures. Why is this?
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
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Java variable number or arguments for a method
...
That's correct. You can find more about it in the Oracle guide on varargs.
Here's an example:
void foo(String... args) {
for (String arg : args) {
System.out.println(arg);
}
}
which can be called as
foo("foo"); // Single arg.
foo("foo", "bar"); // Multiple args.
...
Use curly braces to initialize a Set in Python
...comprehensive syntax to initialize sets:
>>> a = {x for x in """didn't know about {} and sets """ if x not in 'set' }
>>> a
set(['a', ' ', 'b', 'd', "'", 'i', 'k', 'o', 'n', 'u', 'w', '{', '}'])
share
...
How do I access this object property with an illegal name?
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Adding a user to a group in django
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jQuery / Javascript - How do I convert a pixel value (20px) to a number value (20)
...ut I'd like to be able to use X("20em") for example and get back the true width in pixels.
– Lawrence I. Siden
May 20 '11 at 22:53
2
...
Overriding class constants vs properties
...answered Nov 28 '12 at 20:22
David FarrellDavid Farrell
2,73822 gold badges1111 silver badges1111 bronze badges
...
Does Notepad++ show all hidden characters?
... Show Symbol → Show White Space and TAB
(Thanks to bers' comment and bkaid's answers below for these updated locations.)
On older versions you can look for:
Menu View → Show all characters
or
Menu View → Show White Space and TAB
...
Using variables inside a bash heredoc
I'm trying to interpolate variables inside of a bash heredoc:
3 Answers
3
...