Tutorial by Examples: in

It is always recommend to go to the LLVM official website and follow the installation guides depending on your OS. If you are working on posix then in short you have to add one of the official LLVM package repositories. For example if you work on Ubuntu Xenial (16.04) you add a deb and deb-src entr...

There are currently three YouTube APIs available to the public: YouTube Data API YouTube Analytics API YouTube Reporting API Each of these offer different functionality and are treated as separate, individual APIs. Since YouTube is a subsidiary of Google, the various YouTube APIs are provid...

Macros are simple string replacements. (Strictly speaking, they work with preprocessing tokens, not arbitrary strings.) #include <stdio.h> #define SQUARE(x) x*x int main(void) { printf("%d\n", SQUARE(1+2)); return 0; } You may expect this code to print 9 (3*3), ...

POST /token HTTP/1.1 Host: server.example.com Content-Type: application/x-www-form-urlencoded grant_type=refresh_token&refresh_token=[REFRESH_TOKEN] &client_id=[APP_KEY]&client_secret=[APP_SECRET] Source

The function chomp will remove one newline character, if present, from each scalar passed to it. chomp will mutate the original string and will return the number of characters removed my $str = "Hello World\n\n"; my $removed = chomp($str); print $str; # "Hello World\n" pr...

To use multiple databases in Django, just specify each one in settings.py: DATABASES = { 'default': { 'NAME': 'app_data', 'ENGINE': 'django.db.backends.postgresql', 'USER': 'django_db_user', 'PASSWORD': os.environ['LOCAL_DB_PASSWORD'] }, 'users': {...

The normal obj.save() method will use the default database, or if a database router is used, it will use the database as specified in db_for_write. You can override it by using: obj.save(using='other_db') obj.delete(using='other_db') Similarly, for reading: MyModel.objects.using('other_db').al...

Ansible uses the concept of roles to better allow modular code and avoid repeating yourself. A role is simply a folder structure that Ansible knows where to load vars files, tasks and handlers from. An example might look something like this: apache/ ├── defaults │   └── main.yml ├── files │   ...

It's also possible to easily share roles with the community or download roles that have been created by other members of the community with Ansible Galaxy. Ansible ships with a command line tool called ansible-galaxy that can be used to install roles in the role directory defined in the ansible.cfg...

Above I noticed an example to remove items from a List within a Loop and I thought of another example that may come in handy this time using the Iterator interface. This is a demonstration of a trick that might come in handy when dealing with duplicate items in lists that you want to get rid of. N...

The left-shift operator (<<) can be used in flag enum declarations to ensure that each flag has exactly one 1 in binary representation, as flags should. This also helps to improve readability of large enums with plenty of flags in them. [Flags] public enum MyEnum { None = 0, Fl...

Customer Model package org.bookmytickets.model; import org.springframework.data.annotation.Id; public class Customer { @Id private String id; private String firstName; private String lastName; public Customer() {} public Customer(String firstName, String la...

For testing our application, I'm using advance rest client which is chrome extension: So, here is the snapshot for inserting the data:

A Intersection Type combines the member of two or more types. interface Knife { cut(); } interface BottleOpener{ openBottle(); } interface Screwdriver{ turnScrew(); } type SwissArmyKnife = Knife & BottleOpener & Screwdriver; function use(tool: SwissArmyKnife){ ...

CSS and JS files should be reside under 'static' directory in the root directory of module (the rest of subdirectory tree under 'static' is an optional convention): static/src/css/your_file.css static/src/js/your_file.js Then add links to these files unsing one of the 3 ways listed in the fol...

Odoo v8.0 way is to add corresponding record in the XML file: ​Add XML file to the manifest (i.e. __openerp__.py file.): ... 'data' : [ 'your_file.xml' ], ​... Then add following record in 'your_file.xml': <openerp> <data> <template id="...

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...

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...

The widely used combination of tic and toc can provide a rough idea of the execution time of a function or code snippets. For comparing several functions it shouldn't be used. Why? It is almost impossible to provide equal conditions for all code snippets to compare within a script using above solu...