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What is a callback URL in relation to an API?
...thod you're calling after it's done. So if you call
POST /api.example.com/foo?callbackURL=http://my.server.com/bar
Then when /foo is finished, it sends a request to http://my.server.com/bar. The contents and method of that request are going to vary - check the documentation for the API you're acc...
Are global variables in PHP considered bad practice? If so, why?
...A common practice is to define global vars using ALL CAPS. example: $DB = 'foo';
– pixeline
Mar 26 '15 at 9:31
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Parsing a JSON string in Ruby
...rse JSON, simply use require 'json':
require 'json'
json = JSON.parse '{"foo":"bar", "ping":"pong"}'
puts json['foo'] # prints "bar"
See JSON at Ruby-Doc.
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How do I pass extra arguments to a Python decorator?
...to wrap my head around.
class NiceDecorator:
def __init__(self, param_foo='a', param_bar='b'):
self.param_foo = param_foo
self.param_bar = param_bar
def __call__(self, func):
def my_logic(*args, **kwargs):
# whatever logic your decorator is supposed to i...
Python: finding an element in a list [duplicate]
...ct attributes (which I need a lot):
el = [x for x in mylist if x.attr == "foo"][0]
Of course this assumes the existence (and, actually, uniqueness) of a suitable element in the list.
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impr...
Logical operator in a handlebars.js {{#if}} conditional
...
In fact, we can add all sorts of logic:
{{#if (or
(eq section1 "foo")
(ne section2 "bar"))}}
.. content
{{/if}}
Just register these helpers:
Handlebars.registerHelper({
eq: (v1, v2) => v1 === v2,
ne: (v1, v2) => v1 !== v2,
lt: (v1, v2) => v1 < v2,
gt...
Can Flask have optional URL parameters?
...rstand how to build the URL properly. You can get something like /page?arg=foo where it should be /foo/page . @Audrius Kažukauskas answer works in that case, but this doesn't
– rgargente
Nov 12 '19 at 16:08
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Inheriting from a template class in c++
...lic Rectangle,
public Area<T>
{
// Area dependent stuff
};
void foo(Rectangle&); // A function which works with generic rectangles
int main()
{
SpecificRectangle<int> intrect;
foo(intrect);
SpecificRectangle<char> charrect;
foo(charrect);
}
If it is important t...
How to assign the output of a Bash command to a variable? [duplicate]
...erforms globbing on these words. Always double-quote variable expansions "$foo" and command substitutions "$(foo)" (unless you specifically know you have not to).
In the general case, as other answers have mentioned already:
You can't use whitespace around the equal sign in an assignment: var=val...
How to find out where a function is defined?
...PHP 5):
one-liner to print the filename:
print (new ReflectionFunction("foo"))->getFileName();
Please note that it won't show you the location for internal functions (such as _), but it still can print the API for it as below.
to print the definition and parameters of the function:
print...