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Subclassing a Java Builder class
...classes must be final.
public abstract class TopLevel {
protected int foo;
protected TopLevel() {
}
protected static abstract class Builder
<T extends TopLevel, B extends Builder<T, B>> {
protected T object;
protected B thisObject;
protect...
How to disable HTML button using JavaScript?
...operty is also called disabled and is a boolean that takes true or false.
foo.disabled = true;
In theory you can also foo.setAttribute('disabled', 'disabled'); and foo.removeAttribute("disabled"), but I wouldn't trust this with older versions of Internet Explorer (which are notoriously buggy when...
Iterate through options
...L Code
<select id="mySelectionBox">
<option value="hello">Foo</option>
<option value="hello1">Foo1</option>
<option value="hello2">Foo2</option>
<option value="hello3">Foo3</option>
</select>
You JQuery Code
$("#mySelect...
In C++, what is a “namespace alias”?
...opes.) For example, neither of these will compile:
namespace A {
int foo;
namespace AA {
int bar;
} // namespace AA
namespace AB {
int bar;
} // namespace AB
} // namespace A
namespace B {
int foo;
namespace BA {
int bar;
} // namespace BA
...
Immutable vs Mutable types
...ou agree strings are immutable right? But you can do the same thing.
s = 'foo'
s += 'bar'
print s # foobar
The value of the variable changes, but it changes by changing what the variable refers to. A mutable type can change that way, and it can also change "in place".
Here is the difference.
x ...
AssertContains on strings in jUnit
...
If you add in Hamcrest and JUnit4, you could do:
String x = "foo bar";
Assert.assertThat(x, CoreMatchers.containsString("foo"));
With some static imports, it looks a lot better:
assertThat(x, containsString("foo"));
The static imports needed would be:
import static org.junit.Asse...
Git cherry pick vs rebase
...versions of Git; at present time you can do something like git cherry-pick foo~3..foo and get the tree top commits from "foo" picked one by one.
– kostix
Aug 6 '12 at 23:29
...
How to create an array containing 1…N
...ater loop through.
If this is all you need, can you do this instead?
var foo = new Array(45); // create an empty array with length 45
then when you want to use it... (un-optimized, just for example)
for(var i = 0; i < foo.length; i++){
document.write('Item: ' + (i + 1) + ' of ' + foo.lengt...
How do you run a single test/spec file in RSpec?
...or example, if you had a spec like:
1:
2: it "should be awesome" do
3: foo = 3
4: foo.should eq(3)
5: end
6:
Let's say it's saved in spec/models/foo_spec.rb. Then you would run:
rspec spec/models/foo_spec.rb:2
and it would just run that one spec. In fact, that number could be anything f...
What is the point of noreturn?
...atsoever - you know it already. So the following is sound:
(void)5;
(void)foo(17); // whatever foo(17) does
But the assignment below is not:
void raise();
void f(int y) {
int x = y!=0 ? 100/y : raise(); // raise() returns void, so what should x be?
cout << x << endl;
}
[[no...