Tutorial by Examples: d

Note: you should use this way if you've installed a "website" module and you have a public website available. Add following record in 'your_file.xml': <openerp> <data> <template id="assets_frontend" name="your_module_name assets" inherit...

Add following record in 'your_file.xml': <openerp> <data> <template id="assets_common" name="your_module_name assets" inherit_id="web.assets_common"> <xpath expr="." position="inside"> <link rel...

With the Class Based generic Views, it is very simple and easy to create the CRUD views from our models. Often, the built in Django admin is not enough or not preferred and we need to roll our own CRUD views. The CBVs can be very handy in such cases. The CreateView class needs 3 things - a model, t...

Starting with a three-dimensional list: alist = [[[1,2],[3,4]], [[5,6,7],[8,9,10], [12, 13, 14]]] Accessing items in the list: print(alist[0][0][1]) #2 #Accesses second element in the first list in the first list print(alist[1][1][2]) #10 #Accesses the third element in the second list in...

Here is a simple example of an XAML page in WPF. It consists of a Grid, a TextBlock and a Button - the most common elements in XAML. <Window x:Class="FirstWpfApplication.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x=&q...

There are two different types of descriptors. Data descriptors are defined as objects that define both a __get__() and a __set__() method, whereas non-data descriptors only define a __get__() method. This distinction is important when considering overrides and the namespace of an instance's dictiona...

Encoding and decoding functions for a variety of Unicode encodings can be found in the Data.Text.Encoding module. ghci> import Data.Text.Encoding ghci> decodeUtf8 (encodeUtf8 "my text") "my text" Note that decodeUtf8 will throw an exception on invalid input. If you wa...

By default, GHCI's prompt shows all the modules you have loaded into your interactive session. If you have many modules loaded this can get long: Prelude Data.List Control.Monad> -- etc The :set prompt command changes the prompt for this interactive session. Prelude Data.List Control.Monad&g...

The :l or :load command type-checks and loads a file. $ echo "f = putStrLn \"example\"" > example.hs $ ghci GHCi, version 8.0.1: http://www.haskell.org/ghc/ :? for help ghci> :l example.hs [1 of 1] Compiling Main ( example.hs, interpreted ) Ok, modules ...

Windows / Linux: Ctrl + P OS X / macOS: Cmd + P Shows what parameters a method and all of its overloads accepts.

def str = 'Single quoted string' assert str instanceof String

def str = "Double quoted string" assert str instanceof String

def param = 'string' def str = "Double quoted ${param}" assert str instanceof GString assert str == 'Double quoted string' The parameter is by default resolved eagerly, this means this applies: def param = 'string' def str = "Double quoted ${param}" param = 'another stri...

def param = 'string' def str = """ multiline $param """ assert str instanceof GString assert str.readLines().size() == 3 assert str == ''' multiline string '''

def str = / multiline string no need to escape slash \n / assert str instanceof String assert str.readLines().size() == 4 assert str.contains('\\n')

def param = 'string' def str = $/ multiline $param no need to escape slash \n $ $$ /$ assert str instanceof GString assert str.readLines().size() == 6 assert str.contains('\\n') assert str.contains('$')

All functions to interact with coroutines are avaliable in the coroutine table. A new coroutine is created by using the coroutine.create function with a single argument: a function with the code to be executed: thread1 = coroutine.create(function() print("honk") end)...

If you need to apply a setting dynamically after the cluster has already started, and it can actually be set dynamically, then you can set it using _cluster/settings API. Persistent settings are one of the two type of cluster-wide settings that can be applied. A persistent setting will survive a fu...

If you need to apply a setting dynamically after the cluster has already started, and it can actually be set dynamically, then you can set it using _cluster/settings API. Transient settings are one of the two type of cluster-wide settings that can be applied. A transient setting will not survive a ...

Index settings are those settings that apply to a single index. Such settings will start with index.. The exception to that rule is number_of_shards and number_of_replicas, which also exist in the form of index.number_of_shards and index.number_of_replicas. As the name suggests, index-level setting...