Tutorial by Examples: ed

As a developer, you frequently find yourself dealing with strings that are not created by your own code. These will often be supplied by third party libraries, external systems, or even end users. Validating strings of unclear provenance is considered to be one of the hallmarks of defensive program...

module.exports.routes = { 'GET /foo': 'FooController.index', 'GET /foo/new': 'FooController.new', 'POST /foo/create': 'FooController.create', 'GET /foo/:id/edit': 'FooController.edit', 'PUT /foo/:id/update': 'FooController.update', 'GET /foo/:id': 'FooController.show', ...

module.exports.routes = { '/foo': '/bar', 'GET /google': 'http://www.google.com' };

A cached query is a query that has its results stored in the server's memory. The results are stored when the query is first run. From then on, whenever that query is requested again, ColdFusion will retrieve the results from memory. You can cache a query using the cachedAfter attribute. If the que...

You can limit the number of rows to be returned by using the maxrows attribute. <cfquery datasource="Entertainment" maxrows="50"> select * from Movies </cfquery>

create destination with <a id="destinationLinkName"></a> link to destination [link text](#destinationLinkName)

PhpStorm can be very slow in large files as its performing so many inspections. One quick and easy way to speed up PhpStorm is to render using OpenGL. Previously in a 5000 line file it would give the 'eye' symbol in the top right for a long time before changing to a tick (or red/yellow box). After O...

To determine the latest tested/supported version of Node that can be used with your installed version of Meteor, dump the node version directly from the build tool's bundled node instance. meteor node -v

Go to Help → About Eclipse → Check if the m2e feature is there: .

gunzip -c dbname.sql.gz | mysql dbname -u username -p Note: -c means write output to stdout.

Sometimes it happens that a file was being tracked by git, but in a later point in time was added to .gitignore, in order to stop tracking it. It's a very common scenario to forget to clean up such files before its addition to .gitignore. In this case, the old file will still be hanging around in th...

Some problems can occur if the .git folder has wrong permission. Fixing this problem by setting the owner of the complete .git folder. Sometimes it happen that another user pull and change the rights of the .git folder or files. To fix the problem: chown -R youruser:yourgroup .git/

Normally, to remove files that are staged to be committed using the git reset commit, reset has a lot of functions depending on the arguments provided to it. To completely unstage all files staged, we can make use of git aliases to create a new alias that uses reset but now we do not need to remembe...

In build.sbt, make sure you include (here for Mysql and PostGreSQL): "mysql" % "mysql-connector-java" % "5.1.20", "org.postgresql" % "postgresql" % "9.3-1100-jdbc4", "com.typesafe.slick" %% "slick" % "3.1.1&...

import { Component } from '@angular/core'; import { Router , ROUTER_DIRECTIVES} from '@angular/router'; import { NgForm } from '@angular/forms'; @Component({ selector: 'login', template: ` <h2>Login</h2> <form #f="ngForm" (ngSubmit)="login(f.value,f....

Sometimes you may want to perform some additional actions to Auto Layout calculations done by UIKit itself. Example: when you have a UIView that has a maskLayer, you may need to update maskLayer as soon as Auto Layout changes UIView's frame // CustomView.m - (void)layoutSubviews { [super la...

Prior to C++17, template deduction cannot deduce the class type for you in a constructor. It must be explicitly specified. Sometimes, however, these types can be very cumbersome or (in the case of lambdas) impossible to name, so we got a proliferation of type factories (like make_pair(), make_tuple(...

Demonstrate how to embed a lua interpreter in C code, expose a C-defined function to Lua script, evaluate a Lua script, call a C-defined function from Lua, and call a Lua-defined function from C (the host). In this example, we want the mood to be set by a Lua script. Here is mood.lua: -- Get versi...

To setup a WebRTC-based communication system, you need three main components: A WebRTC signaling server To establish a WebRTC connections, peers need to contact a signaling server, which then provides the address information the peers require to set up a peer-to-peer connection. Signaling serv...

Xposed is a framework that allows you to hook method calls of other apps. When you do a modification by decompiling an APK, you can insert/change commands directly wherever you want. However, you will need to recompile/sign the APK afterwards and you can only distribute the whole package. With Xpose...