Tutorial by Examples: l

Recommendation Because the symbols i and j can represent significantly different things in MATLAB, their use as loop indices has split the MATLAB user community since ages. While some historic performance reasons could help the balance lean to one side, this is no longer the case and now the choice...

CREATE TABLE dbo.Employee ( [EmployeeID] int NOT NULL PRIMARY KEY CLUSTERED , [Name] nvarchar(100) NOT NULL , [Position] varchar(100) NOT NULL , [Department] varchar(100) NOT NULL , [Address] nvarchar(1024) NOT NULL , [AnnualSalary] decimal (10,2) NOT NULL ...

SELECT * FROM Employee FOR SYSTEM_TIME BETWEEN '2014-01-01 00:00:00.0000000' AND '2015-01-01 00:00:00.0000000' WHERE EmployeeID = 1000 ORDER BY ValidFrom;

Returns a table with a rows containing the values that were actual (current) at the specified point in time in the past. SELECT * FROM Employee FOR SYSTEM_TIME AS OF '2016-08-06 08:32:37.91'

Required compiler features can be specified on a target using the command target_compile_features: add_library(foo foo.cpp ) target_compile_features(foo PRIVATE # scope of the feature cxx_constexpr # list of features ) The features must be part of CMAKE_C_COMPILE_FE...

MailApp is the api from Google App Script that can be used to send mail function sendEmails() { var subject = "A subject for your new app!"; var message = "And this is the very first message" var recipientEmail = "[email protected]"; MailApp.sendEmail(rec...

Given - A have sheet of employees who have requested for reimbursement. Requirement - We should sent out an email to the employee when their reimbursement is processed So, the sheet is as follows: The function for sending out an email is as follows: function getDataSheet() { sheet = Sprea...

In the above example, if we want to send out HTML content as message in the email, then create a HTML file by going to File -> New -> HTML file Now you can see a HTML file besides your gs file as follows : Now, update the getMessage() method from above example as follows : function getMes...

A simple PL/pgSQL function: CREATE FUNCTION active_subscribers() RETURNS bigint AS $$ DECLARE -- variable for the following BEGIN ... END block subscribers integer; BEGIN -- SELECT must always be used with INTO SELECT COUNT(user_id) INTO subscribers FROM users WHERE subscribed...

Sometimes you need to match a literal (sub-)string with a regular expression despite that substring containing RE metacharacters. While yes, it's possible to write code to insert appropriate backslashes to make that work (using string map) it is easiest to just prefix the pattern with ***=, which ma...

Design (layout XML): <AutoCompleteTextView android:id="@+id/autoCompleteTextView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentTop="true" android:layout_centerHorizontal="true&...

Marshal class contains a function named PtrToStructure, this function gives us the ability of reading structures by an unmanaged pointer. PtrToStructure function got many overloads, but they all have the same intention. Generic PtrToStructure: public static T PtrToStructure<T>(IntPtr ptr); ...

DECLARE CURSOR c_emp_to_be_raised(p_sal emp.sal%TYPE) IS SELECT * FROM emp WHERE sal < p_sal; BEGIN FOR cRowEmp IN c_emp_to_be_raised(1000) LOOP dbms_Output.Put_Line(cRowEmp .eName ||' ' ||cRowEmp.sal||'... should be raised ;)'); END LOOP; END; /

BEGIN FOR x IN (SELECT * FROM emp WHERE sal < 100) LOOP dbms_Output.Put_Line(x.eName ||' '||x.sal||'... should REALLY be raised :D'); END LOOP; END; / First advantage is there is no tedious declaration to do (think of this horrible "CURSOR" thing you had in previous ve...

Declare the cursor to scan a list of records Open it Fetch current record into variables (this increments position) Use %notfound to detect end of list Don't forget to close the cursor to limit resources consumption in current context -- DECLARE CURSOR curCols IS -- select column name a...

This is a minimal possible XSLT transformation. It produces the string value of the source XML document. The output format is text. Source XML document: <t>Hello, World!</t> XSLT transformation: <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/T...

If you don't have Visual Studio 2015, go to https://www.visualstudio.com/en-us/downloads/download-visual-studio-vs.aspx and select Visual Studio Community. It is a free version that have all the required capabilities to develop Windows 10 application. You can install the Enterprise Edition if you ha...

This example shows the base of almost any XSLT transformation and the most fundamental XSLT design pattern. Producing as output an XML document that is identical to the source XML document. Source XML document: <t>Hello, World!</t> XSLT transformation: <xsl:stylesheet version=&q...

qplot is intended to be similar to base r plot() function, trying to always plot out your data without requiring too much specifications. basic qplot qplot(x = disp, y = mpg, data = mtcars) adding colors qplot(x = disp, y = mpg, colour = cyl,data = mtcars) adding a smoother qplot(x = d...

A downcast can be used to make use of a subclass's code and data inside of a function taking a parameter of its superclass. class Rat { var color = "white" } class PetRat: Rat { var name = "Spot" } func nameOfRat(🐭: Rat) -> String { guard let petRat = ...