Tutorial by Examples: ce

[Service] # empty exec prevents error "docker.service has more than one ExecStart= setting, which is only allowed for Type=oneshot services. Refusing." ExecStart= ExecStart=/usr/bin/dockerd -H fd:// --log-driver=syslog This enables syslog logging for the docker daemon. The file sho...

Suppose, that we have three users : The Administrator of the database > admin The application with a full access for her data > read_write The read only access > read_only With below queries, you can set access privileges on objects created in the future in specified schema. ALTER ...

Assuming a default server running on localhost with the default port, the command to connect to that Redis server would be: $redis = new Redis(); $redis->connect('127.0.0.1', 6379);

Preparing data: create table wf_example(i int, t text,ts timestamptz,b boolean); insert into wf_example select 1,'a','1970.01.01',true; insert into wf_example select 1,'a','1970.01.01',false; insert into wf_example select 1,'b','1970.01.01',false; insert into wf_example select 2,'b','1970.01.01...

For small functions that get called often, the overhead associated with the function call can be a significant fraction of the total execution time of that function. One way of improving performance, then, is to eliminate the overhead. In this example we use four functions (plus main()) in three so...

Go to the [https://developers.facebook.com/](https://developers.facebook.com/) and create your app. Click Add product and choose Facebook Login

If you enable prettyUrl in your yii2-app, your redirect_uri will be: http://<base_url>/web/site/auth And disable pretty url: http://<base_url>/web/index.php?r=site%2Fauth Example:

/** * @param $client ClientInterface */ public function onAuthSuccess($client) { //Get user info /** @var array $attributes */ $attributes = $client->getUserAttributes(); $email = ArrayHelper::getValue($attributes, 'email'); //email info $id = ArrayHelper::getValue(...

Persistence is created in docker containers using volumes. Let's create a Limesurvey container and persist the database, uploaded content and configuration in a named volume: docker volume create --name mysql docker volume create --name upload docker run -d --name limesurvey -v mysql:/var/lib/m...

select * from dict

In WSO2 registry is a content store and a metadata repository. In WSO2 products and particularly WSO2 ESB uses registry to store metadata, artifacts (WSDL, XSD etc.,) and other service configurations like endpoints, sequences etc., Registry in WSO2 ESB has three flavours. Local registry Config...

Matrices are essentially two-dimensional arrays. That means that it associates (i, j) coordinates, where i is the row and j is the column, to a value. So, you could have : m3, 4 = "Hello" The easiest implementation is to make an array or arrays. In python, that would go as follows. ma...

REPLACE ==magic-number== BY ==65535==.

GCobol >>SOURCE FORMAT IS FIXED *> *************************************************************** *> Purpose: RELATIVE file organization REWRITE example *> Tectonics: cobc -g -debug -W -x relatives.cob *> *********************************************...

In ruby you can add methods to existing instances of any class. This allows you to add behavior to and instance of a class without changing the behavior of the rest of the instances of that class. class Example def method1(foo) puts foo end end #defines method2 on object exp exp = E...

1. at(pos) Returns a reference to the element at position pos with bounds checking. If pos is not within the range of the container, an exception of type std::out_of_range is thrown. The complexity is constant O(1). #include <array> int main() { std::array<int, 3> arr; ...

With Class-Based Views, we use classes instead of methods to implement our views. A simple example of using Class-Based Views looks as follows: from flask import Flask from flask.views import View app = Flask(__name__) class HelloWorld(View): def dispatch_request(self): ret...

Sample uses Install-Package Google.Apis.AnalyticsReporting.v4 Public Shared Function getServiceInitializer() As BaseClientService Dim serviceAccountCredentialFilePath = "Path to Json service account key file" REM from Google Developers console Dim myKeyEMail ...

update <SCHEMA_NAME>.<TABLE_NAME_1> AS A SET <COLUMN_1> = True FROM <SCHEMA_NAME>.<TABLE_NAME_2> AS B WHERE A.<COLUMN_2> = B.<COLUMN_2> AND A.<COLUMN_3> = B.<COLUMN_3>

Monthwise difference between two dates(timestamp) select ( (DATE_PART('year', AgeonDate) - DATE_PART('year', tmpdate)) * 12 + (DATE_PART('month', AgeonDate) - DATE_PART('month', tmpdate)) ) from dbo."Table1" Yearwise difference between two dates...