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Explanation of JSONB introduced by PostgreSQL
....ex. these are valid JSON representations: null, true, [1,false,"string",{"foo":"bar"}], {"foo":"bar","baz":[null]} - hstore is just a little subset compared to what JSON is capable (but if you only need this subset, it's fine).
The only difference between json & jsonb is their storage:
json ...
What are allowed characters in cookies?
...browsers treat it as the cookie with the empty-string name, ie Set-Cookie: foo is the same as Set-Cookie: =foo.
when browsers output a cookie with an empty name, they omit the equals sign. So Set-Cookie: =bar begets Cookie: bar.
commas and spaces in names and values do actually seem to work, though ...
Is it possible to delete an object's property in PHP?
...object attributes.
Example:
$a = new stdClass();
$a->new_property = 'foo';
var_export($a); // -> stdClass::__set_state(array('new_property' => 'foo'))
unset($a->new_property);
var_export($a); // -> stdClass::__set_state(array())
...
Error “The connection to adb is down, and a severe error has occurred.”
I've spent days trying to launch any Android program. Even "Hello World" gives me the same error:
39 Answers
...
Multiple arguments vs. options object
...s.
Consider the following terrible code:
function main() {
const x = foo({
param1: "something",
param2: "something else",
param3: "more variables"
});
return x;
}
function foo(params) {
params.param1 = "Something new";
bar(params);
return params;
}...
Understanding dict.copy() - shallow or deep?
While reading up the documentation for dict.copy() , it says that it makes a shallow copy of the dictionary. Same goes for the book I am following (Beazley's Python Reference), which says:
...
Get path from open file in Python
...
If you create a file using open('foo.txt', 'w') and then do f.name, it only provides you with the output foo.txt
– searchengine27
Jun 16 '15 at 17:04
...
What does it mean when a CSS rule is grayed out in Chrome's element inspector?
...nt containing the text "Hello, world!"
div {
margin: 0;
}
div#foo {
margin-top: 10px;
}
<div id="foo">Hello, world!</div>
share
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improve this answer
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Python - Passing a function into another function
...ents to be passed to `func`.
Example
-------
>>> def foo(a:Union[float, int], b:Union[float, int]):
... '''The function to pass'''
... print(a+b)
>>> looper(foo, 3, 2, b=4)
6
6
6
"""
for i in range(n):
fn(*args, **kw...
What is the Java ?: operator called and what does it do?
...y notable in final fields, but useful elsewhere, too.
e.g.:
public class Foo {
final double value;
public Foo(boolean positive, double value) {
this.value = positive ? value : -value;
}
}
Without that operator - by whatever name - you would have to make the field non-fina...