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What does if __name__ == “__main__”: do?
...e how imports and scripts work. Suppose the following is in a file called foo.py.
# Suppose this is foo.py.
print("before import")
import math
print("before functionA")
def functionA():
print("Function A")
print("before functionB")
def functionB():
print("Function B {}".format(math.sqrt(...
How can I ignore everything under a folder in Mercurial
...sitory is in E:\Dev for example, hg status will apply the patterns against foo/bar/file1.c and such. Anchors apply to this path.
So:
Glob applies to path elements and is rooted to element parts
foo matches any folder (or file) named foo (not to "foobar" nor "barfoo")
*foo* matches any folder or f...
Select random row from a sqlite table
... How to extend this solution to a join? When using SELECT a.foo FROM a JOIN b ON a.id = b.id WHERE b.bar = 2 ORDER BY RANDOM() LIMIT 1; I always get the same row.
– Helmut Grohne
Sep 19 '13 at 8:18
...
Rails Model, View, Controller, and Helper: what goes where?
...rom controller to view" anti-pattern. Instead of this:
# app/controllers/foos_controller.rb:
class FoosController < ApplicationController
def show
@foo = Foo.find(...)
end
end
#app/views/foos/show.html.erb:
...
<%= @foo.bar %>
...
Try moving it to a getter that is available a...
Global and local variables in R
...bles declared inside a function are local to that function. For instance:
foo <- function() {
bar <- 1
}
foo()
bar
gives the following error: Error: object 'bar' not found.
If you want to make bar a global variable, you should do:
foo <- function() {
bar <<- 1
}
foo()
bar...
Can a decorator of an instance method access the class?
...ike for using the decorator with parameters? E.g. @class_decorator('test', foo='bar')
– luckydonald
Dec 13 '19 at 16:36
2
...
Where is C not a subset of C++? [closed]
...r enum, its name is immediately accessible without any qualifiers:
struct foo { ... };
foo x; // declare variable
In C, this won't work, because types thus declared live in their own distinct namespaces. Thus, you have to write:
struct foo { ... };
struct foo x; // declare variable
Notice the ...
How to pass parameters using ui-sref in ui-router to controller
... definition would be:
$stateProvider
.state('home', {
url: '/:foo?bar',
views: {
'': {
templateUrl: 'tpl.home.html',
controller: 'MainRootCtrl'
},
...
}
And this would be the controller:
.controller('MainRootCtrl', function($sc...
Determine function name from within that function (without using traceback)
...
import inspect
def foo():
print(inspect.stack()[0][3])
print(inspect.stack()[1][3]) #will give the caller of foos name, if something called foo
share
...
Using DNS to redirect to another URL with a path [closed]
...
if you use AWS, a redirect like
mail.foo.com --> mail.google.com/a/foo.com
can be setup as follows:
in s3, create an empty bucket "mail.foo.com"
under Properties -> Static Website Hosting, set "redirect all requests to: mail.google.com/a/foo.com"
in ro...