Tutorial by Examples: r

let map f list = let rec loop acc = function | [] -> List.rev acc | head :: tail -> loop (f head :: acc) tail loop [] list The signature of this function is ('a -> 'b) -> 'a list -> 'b list, which is the most generic it can be. This does not p...

The Dictionary allows getting a unique set of values very simply. Consider the following function: Function Unique(values As Variant) As Variant() 'Put all the values as keys into a dictionary Dim dict As New Scripting.Dictionary Dim val As Variant For Each val In values ...

<?php set_query_var( 'passed_var', $my_var ); get_template_part( 'foo', 'bar' ); ?> Access it in foo-bar.php <?php echo $passed_var; ?>

You can access the real data type of interface with Type Assertion. interfaceVariable.(DataType) Example of struct MyType which implement interface Subber: package main import ( "fmt" ) type Subber interface { Sub(a, b int) int } type MyType struct { Msg stri...

To run macros and maintain the security Office applications provide against malicious code, it is necessary to digitally sign the VBAProject.OTM from the VBA editor > Tools > Digital Signature. Office comes with a utility to create a self-signed digital certificate that you can employ on th...

HTML: <div class="wrapper"> <img src="http://cdn.sstatic.net/Sites/stackoverflow/company/img/logos/so/so-icon.png?v=c78bd457575a"> </div> CSS: .wrapper{ position:relative; height: 600px; } .wrapper img { position: absolute; top: 0; le...

Filetype plugins for foo filetype are sourced in that order: 1. $HOME/.vim/ftplugin/foo.vim. Be careful with what you put in that file as it may be overridden by $VIMRUNTIME/ftplugin/foo.vim -- under windows, it'll be instead $HOME/vimfiles/ftplugin/foo.vim 2. $VIMRUNTIME/ftplugin/foo.vim. Like ev...

TypeScript Angular 2 Component import {Component, OnInit, ViewChild, Renderer} from '@angular/core'; import {SuiTransition} from "ng2-semantic-ui/components/transition/transition"; @Component({ selector: 'app-home', templateUrl: './home.component.html', styleUrls: ['./home.co...

Having culture-specific URLs can be beneficial in terms of SEO. E.g. English version of the following page: http://www.mydomain.com/insurance Would translate into: http://www.mydomain.nl/verzekering Instead of: http://www.mydomain.nl/nl-nl/insurance There are more approaches of achievin...

For anything below 1.9 SpawnEgg egg = new SpawnEgg(EntityType.CREEPER); ItemStack creeperEgg = egg.toItemStack(5); For 1.9 and above In versions 1.9 and higher, Spigot does not have an implementation for creating spawn eggs without using NMS. To accomplish this, you can use a small custom cl...

class Functor f where fmap :: (a -> b) -> f a -> f b One way of looking at it is that fmap lifts a function of values into a function of values in a context f. A correct instance of Functor should satisfy the functor laws, though these are not enforced by the compiler: fmap id = i...

The Data.Functor module contains two combinators, <$ and $>, which ignore all of the values contained in a functor, replacing them all with a single constant value. infixl 4 <$, $> <$ :: Functor f => a -> f b -> f a (<$) = fmap . const $> :: Functor f => f a ...

Steps to create "Hello, World!" application in Oracle Application Express: Log in to your workspace. Click Application Builder. Application Builder page opens. Click Create. Page with 4 application types appears. Page contains short help text about each application type. Click Deskto...

You can request free Oracle Application Express workspace on official site: apex.oracle.com.

Detailed instructions on getting travis-ci set up or installed.

Introduction System Workbench for STM32 is a free IDE on Windows, Linux and OS X. Description from ST Microelectronics: The System Workbench toolchain, called SW4STM32, is a free multi-OS software development environment based on Eclipse, which supports the full range of STM32 microcontrollers...

Introduction IAR Integrated development environment and optimizing C/C++ compiler for ARM Cortex-M. Description from ST Microelectronics: The IAR-EWARM is a software development suite delivered with ready-made device configuration files, flash loaders and 4300 example projects included. IAR E...

Introduction C/C++ IDE for ARM development. Atollic TrueSTUDIO® is tested and verified on the following Operating Systems: Microsoft® Windows ®Vista (32-bit version) Microsoft® Windows® Vista (64-bit version) Microsoft® Windows® 7 (32-bit version) Microsoft® Windows® 7 (64-bit version) Micr...

Some of the queryFor* methods available in JdbcTemplate are useful for simple sql statements that perform CRUD operations. Querying for Date String sql = "SELECT create_date FROM customer WHERE customer_id = ?"; int storeId = jdbcTemplate.queryForObject(sql, java.util.Date.class, custom...

int storeId = 1; DataSource dataSource = ... // JdbcTemplate jdbcTemplate = new JdbcTemplate(dataSource); String sql = "SELECT * FROM customer WHERE store_id = ?"; List<Map<String, Object>> mapList = jdbcTemplate.queryForList(sql, storeId); for(Map<String, Object> ...