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How to sort with lambda in Python
...result is [('303', '30'), ('343', '34'), ('999', '9')] which is not sorted base on the second element in every list.
– Daniel Kua
Jun 13 at 4:26
...
Maximum call stack size exceeded error
... stack limit.
This is almost always because of a recursive function with a base case that isn't being met.
Viewing the stack
Consider this code...
(function a() {
a();
})();
Here is the stack after a handful of calls...
As you can see, the call stack grows until it hits a limit: the browser ha...
Prevent direct access to a php include file
...exits if the minimum include count isn't met. Note that prior to PHP5, the base page is not considered an include.
2: Defining and verifying a global constant
// In the base page (directly accessed):
define('_DEFVAR', 1);
// In the include files (where direct access isn't permitted):
defined('_DEF...
How do I filter ForeignKey choices in a Django ModelForm?
...rgs)
# access object through self.instance...
self.fields['base_rate'].queryset = Rate.objects.filter(company=self.instance.company)
class ClientAdmin(admin.ModelAdmin):
form = ClientAdminForm
....
You don't need to specify this in a form class, but can do it directly in t...
How to access parent scope from within a custom directive *with own scope* in AngularJS?
... function in these examples but you can use a directive controller as well based on requirement.
Option#1. Through Object literal and from directive html template
index.html
<!DOCTYPE html>
<html ng-app="plunker">
<head>
<meta charset="utf-8" />
<title>Ang...
Where to define custom error types in Ruby and/or Rails?
...below, so that your validations will fail:
def MyModel < ActiveRecord::Base
validate :code_does_not_contain_hyphens
def code_does_not_contain_hyphens
errors.add(:code, "cannot contain hyphens") if code.include?("-")
end
end
When validations are run, this method will piggy-back onto ...
How to format a duration in java? (e.g format H:MM:SS)
...alDuration implements TemporalAccessor {
private static final Temporal BASE_TEMPORAL = LocalDateTime.of(0, 1, 1, 0, 0);
private final Duration duration;
private final Temporal temporal;
public TemporalDuration(Duration duration) {
this.duration = duration;
this.temp...
Using Sinatra for larger projects via multiple files
...g:
thin -R config.ru start
Edit: I'm now maintaining my own Monk skeleton based on the below called Riblits. To use it to copy my template as the basis for your own projects:
# Before creating your project
monk add riblits git://github.com/Phrogz/riblits.git
# Inside your empty project directory
...
How to call getClass() from a static method in Java?
...ck has a benefit of being copy/paste safe...
Caution when using this in a Base Class that other classes inherit from:
It is also worth noting that if this snippet is shaped as a static method of some base class then currentClass value will always be a reference to that base class rather than to an...
Can you get DB username, pw, database name in Rails?
...ain the necessary information from it:
config = Rails.configuration.database_configuration
host = config[Rails.env]["host"]
database = config[Rails.env]["database"]
username = config[Rails.env]["username"]
password = config[Rails.env]["password"]
See the documentation for Rails::Configurati...