Tutorial by Examples | RIP Tutorial

Declaring a record with mutable fields

In the following, weight is declared as a mutable field. type person = { name: string; mutable weight: int };; Remark: As far as design is concerned here, one would consider the fact that a person's name isn't likely to change, but their weight is.

OCaml • Mutable record fields

Initializing a record with mutable fields

Initializing a record with mutable fields isn't different from a regular record initialization. let john = { name = "John"; weight = 115 };;

OCaml • Mutable record fields

Setting the value to a mutable field

To assign a new value to a mutable record field, use the <- operator. john.weight <- 120;; Note: The previous expression has a unit type.

OCaml • Mutable record fields

SELECT with BETWEEN

You can use BETWEEN clause to replace a combination of "greater than equal AND less than equal" conditions. Data +----+-----------+ | id | username | +----+-----------+ | 1 | admin | | 2 | root | | 3 | toor | | 4 | mysql | | 5 | thanks | | 6 | java ...

MySQL • SELECT

Extract non-contiguous slices from the first dimension of a tensor

Generally tf.gather gives you access to elements in the first dimension of a tensor (e.g. rows 1, 3 and 7 in a 2-dimensional Tensor). If you need access to any other dimension than the first one, or if you don't need the whole slice, but e.g. only the 5th entry in the 1st, 3rd and 7th row, you are b...

tensorflow • Tensor indexing

Searching the XML with XPath

Starting with version 2.7 ElementTree has a better support for XPath queries. XPath is a syntax to enable you to navigate through an xml like SQL is used to search through a database. Both find and findall functions support XPath. The xml below will be used for this example <Catalog> &l...

Python Language • Manipulating XML

Build Documentation

Build the documentation for existent doc source with specified source doc directory and where to be built like following: sphinx-build -b html source build

python-sphinx • Build Documentation

Backup of a remote Redis instance to a local instance

On the machine where you'd like to make the backup, jump to the Redis CLI: redis-cli Password? If your master Redis DB (the one you want to replicate) has a password: config set masterauth <password> Start replication Run the following to begin replication: SLAVEOF <host> <...

redis • Backup

T-SQL_script_4_alfresco

/* creates a database for Alfresco, on SQLServer 2008- 2014 */ use master; GO CREATE DATABASE alfresco; GO /* creates a new LOGIN and associated User use alfresco; GO CREATE LOGIN alfresco WITH PASSWORD = 'alfresco'; GO use alfresco; go CREATE USER alfresco FOR LOGIN alfresco; GO ...

alfresco • T-SQL script for creating Alfresco database in SQLServer 2008 - 2014

Example 2: Options Not Included

This example is used in specifying options that might not be included in a database of available housing and its attendant amenities. It builds on the previous example, with some differences: Two procedures are no longer necessary for a single combo box, done by combining the code into a single ...

excel-vba • Creating a drop-down menu in the Active Worksheet with a Combo Box

Add Global Error Handler

A simple way to catch unhandled errors (exceptions) in a VFP application is to use the ON ERROR command near the beginning of your main program. The following ON ERROR command calls a method in the current program called "errorHandler". The values returned by ERROR (the VFP Error Number),...

visual-foxpro • Getting started with visual-foxpro

The JCE

The Java Cryptography Extension (JCE) is a framework built into the JVM to allow developers to easily and securely use cryptography in their programs. It does this by providing a simple, portable interface to programmers, while using a system of JCE Providers to securely implement the underlying cry...