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Get keys from HashMap in Java
...than one key. You can use keySet() to get the set of all keys.
team1.put("foo", 1);
team1.put("bar", 2);
will store 1 with key "foo" and 2 with key "bar". To iterate over all the keys:
for ( String key : team1.keySet() ) {
System.out.println( key );
}
will print "foo" and "bar".
...
How do Third-Party “tracking cookies” work?
...com, then the response might come back with a header that says Set-Cookie: foo=bar. Your browser stores this cookie, and on any subsequent requests to http://example.com, your browser will send foo=bar in the Cookie header. (Or at least until the cookie expires or is deleted.) The browser sends the ...
Create new tmux session from inside a tmux session
...se you'll get a nesting error.
$ tmux new -s development -d
$ tmux new -s foo -d
$ tmux ls
> development: 1 windows (created Wed Jan 13 11:31:38 2016) [204x54]
> foo: 1 windows (created Wed Jan 13 11:31:38 2016) [204x54]
$ tmux attach -t
$ tmux ls
> development: 1 windows (created Wed Jan ...
Spring 3 RequestMapping: Get path value
...WITHIN_HANDLER_MAPPING_ATTRIBUTE:
@RequestMapping("/{id}/**")
public void foo(@PathVariable("id") int id, HttpServletRequest request) {
String restOfTheUrl = (String) request.getAttribute(
HandlerMapping.PATH_WITHIN_HANDLER_MAPPING_ATTRIBUTE);
...
}
...
Using the Swift if let with logical AND operator &&
... or declaration. You can't have both expression and declaration.
let foo = bar is a declaration, it doesn't evaluate to a value that conforms to BooleanType. It declares a constant/variable foo.
Your original solution is good enough, it is much more readable then combining the conditions.
...
Regex for string not ending with given suffix
... "any character that is not in the brackets".
– Fred Foo
May 6 '13 at 12:12
4
...
How do I test for an empty JavaScript object?
...bject's prototype. obj.constructor can be easily forged. Example: function Foo() {} Foo.prototype.constructor = Object; (new Foo()).constructor === Object // true.
– Jesse
Apr 9 '18 at 9:22
...
The property 'value' does not exist on value of type 'HTMLElement'
...ent. Similarly in statically typed Java this won't compile:
public Object foo() {
return 42;
}
foo().signum();
signum() is a method of Integer, but the compiler only knows the static type of foo(), which is Object. And Object doesn't have a signum() method.
But the compiler can't know that, i...
Return first N key:value pairs from dict
...ts as
import itertools
import collections
d = collections.OrderedDict((('foo', 'bar'), (1, 'a'), (2, 'b'), (3, 'c'), (4, 'd')))
x = itertools.islice(d.items(), 0, 4)
for key, value in x:
print key, value
itertools.islice allows you to lazily take a slice of elements from any iterator. If yo...
What does “javascript:void(0)” mean?
...e a control you can click on that opens up a previously-hidden <div id="foo">, it makes some sense to use <a href="#foo"> to link to it. Or if there is a non-JavaScript way of doing the same thing (for example, ‘thispage.php?show=foo’ that sets foo visible to begin with), you can lin...