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Using Sinatra for larger projects via multiple files
...layout.haml
login.haml
main.haml
config.ru
root = ::File.dirname(__FILE__)
require ::File.join( root, 'app' )
run MyApp.new
app.rb
# encoding: utf-8
require 'sinatra'
require 'haml'
class MyApp < Sinatra::Application
enable :sessions
configure :production do
set :haml, {...
An example of how to use getopts in bash
...ere it shouldn't, so change it into just h (without colon)
to expect -p any_string, you need to add p: to the argument list
Basically : after the option means it requires the argument.
The basic syntax of getopts is (see: man bash):
getopts OPTSTRING VARNAME [ARGS...]
where:
OPTSTRING is s...
is_null($x) vs $x === null in PHP [duplicate]
... three if you count isset() ) methods to determine if a value is null: is_null() and === null . I have heard, but not confirmed, that === null is faster, but in a code review someone strongly suggested that I use is_null() instead as it is specifically designed for the null-evaluation purpo...
How do I include a file over 2 directories back?
...er files, while retaining those links if you move your file, is:
require_once($_SERVER['DOCUMENT_ROOT'] . 'directory/directory/file');
DOCUMENT_ROOT is a server variable that represents the base directory that your code is located within.
...
How get integer value from a enum in Rails?
...t the integer values for an enum from the class the enum is on:
Model.sale_infos # Pluralized version of the enum attribute name
That returns a hash like:
{ "plan_1" => 1, "plan_2" => 2 ... }
You can then use the sale_info value from an instance of the Model class to access the integer v...
Check whether a path is valid in Python without creating a file at the path's target
...
tl;dr
Call the is_path_exists_or_creatable() function defined below.
Strictly Python 3. That's just how we roll.
A Tale of Two Questions
The question of "How do I test pathname validity and, for valid pathnames, the existence or writabilit...
How can a LEFT OUTER JOIN return more records than exist in the left table?
...
Table1 Table2
_______ _________
1 2
2 2
3 5
4 6
SELECT Table1.Id, Table2.Id FROM Table1 LEFT OUTER JOIN Table2 ON Table1.Id=Table2.Id
Resu...
Safely override C++ virtual functions
...e keyword:
class child : public parent {
public:
// force handle_event to override a existing function in parent
// error out if the function with the correct signature does not exist
void handle_event(int something) override;
};
...
How do I ignore ampersands in a SQL script running from SQL Plus?
...e code below:
set escape on
and put a \ beside & in the left 'value_\&_intert'
Att
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Symbolic links and synced folders in Vagrant
...ve it by adding particular rsync args to my vagrantfile:
config.vm.synced_folder ".", "/var/www", type: "rsync", rsync__args: ["--verbose", "--archive", "--delete", "-z"]
I also opened this issue on vagrant's github to point out something that appears to be wrong with their default value for r...