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Add a new element to an array without specifying the index in Bash
Is there a way to do something like PHPs $array[] = 'foo'; in bash vs doing:
5 Answers
...
Can you pass parameters to an AngularJS controller on creation?
...h?model="+$attrs.model;
})
<div ng-controller="modelController" model="foobar">
<a href="{{url}}">Click here</a>
</div>
Again, no idea if this is a good idea, but it seems to work and is another alternative.
...
What does extern inline do?
...eak symbol (like C++, aka "just make it work")
__attribute__((weak))
void foo(void);
inline void foo(void) { ... }
Note that this leaves a bunch of copies of the same code lying around, and the linker picks one arbitrarily.
inline, but never emit any symbol (leaving external references)
__attri...
Is there a way to access method arguments in Ruby?
...e name of the parameter and whether it is required.
e.g.
If you do
def foo(x, y)
end
then
method(:foo).parameters # => [[:req, :x], [:req, :y]]
You can use the special variable __method__ to get the name of the current method. So within a method the names of its parameters can be obtaine...
Why can't we have static method in a (non-static) inner class?
...ted in Java. Suppose you've got this class:
class Outer {
private int foo = 0;
class Inner implements Runnable {
public void run(){ foo++; }
}
public Runnable newFooIncrementer(){ return new Inner(); }
}
When you compile it, the generated bytecode will look as if you wrote...
Dynamic validation and name in a form with AngularJS
...>
<ng-form name="innerForm">
<input type="text" name="foo" ng-model="item.foo" />
<span ng-show="innerForm.foo.$error.required">required</span>
</ng-form>
</div>
<input type="submit" ng-disabled="outerForm.$invalid" />
</form>
Sa...
How to avoid “if” chains?
...
Just use an additional function to get your second version to work:
void foo()
{
bool conditionA = executeStepA();
if (!conditionA) return;
bool conditionB = executeStepB();
if (!conditionB) return;
bool conditionC = executeStepC();
if (!conditionC) return;
}
void bar()
{
foo();
...
What is the difference between $(command) and `command` in shell programming?
...ommand substitution because $() can easily nest within itself as in $(echo foo$(echo bar)). There are other differences such as how backslashes are parsed in the backtick/gravemark version, etc.
See BashFAQ/082 for several reasons to always prefer the $(...) syntax.
Also see the POSIX spec for d...
How to include another XHTML in XHTML using JSF 2.0 Facelets?
...plate page /WEB-INF/template.xhtml (as a design hint: the header, menu and footer can in turn even be <ui:include> files):
<!DOCTYPE html>
<html lang="en"
xmlns="http://www.w3.org/1999/xhtml"
xmlns:f="http://xmlns.jcp.org/jsf/core"
xmlns:h="http://xmlns.jcp.org/jsf/html"
...
What does static_assert do, and what would you use it for?
...ry::Version > 2,
"Old versions of SomeLibrary are missing the foo functionality. Cannot proceed!");
class UsingSomeLibrary {
// ...
};
Assuming that SomeLibrary::Version is declared as a static const, rather than being #defined (as one would expect in a C++ library).
Contrast wi...