Modern headers should be self-contained, which means that a program that needs to use the facilities defined by header.h can include that header (#include "header.h") and not worry about whether other headers need to be included first.
Recommendation: Header files should be self-contained...
Google's Include What You Use project, or IWYU, ensures source files include all headers used in the code.
Suppose a source file source.c includes a header arbitrary.h which in turn coincidentally includes freeloader.h, but the source file also explicitly and independently uses the facilities from ...
The C standard says that there is very little difference between the
#include <header.h> and #include "header.h" notations.
[#include <header.h>] searches a sequence of implementation-defined
places for a header identified uniquely by the specified sequence
between the &l...
If a singleshot timer is required, it is quiet handy to have the slot as lambda function right in the place where the timer is declared:
QTimer::singleShot(1000, []() { /*Code here*/ } );
Due to this Bug (QTBUG-26406), this is way is only possible since Qt5.4.
In earlier Qt5 versions it has to ...
The config location for your runner is:
Debian/Ubuntu/CentOS
/etc/gitlab-runner/config.toml if run as root
~/.gitlab-runner/config.toml if run as non-root
Windows
config.toml where your binary is located
A minimal config.toml can look like this:
concurrent = 1
[[runners]]
name = "E...
Gmail Example
MAIL_URL=smtp://username%40gmail.com:[email protected]:465/
Note: This setup only allows 2000 emails to be sent per day. Please see https://support.google.com/a/answer/176600?hl=en for alternative configurations.
Setup
First, install the necessary packages with:
npm install express cors mongoose
Code
Then, add dependencies to server.js, create the database schema and the name of the collection, create an Express.js server, and connect to MongoDB:
var express = require('express');
var cors = require('...
This can be useful if you're writing a game or something that needs to execute a piece of code every a few seconds.
import android.os.Handler;
public class Timer {
private Handler handler;
private boolean paused;
private int interval;
private Runnable task = new Runnable ...
Firstly, we set node category
let groundBody: UInt32 = 0x1 << 0
let boxBody: UInt32 = 0x1 << 1
Then add Ground type node and Box type node.
let ground = SKSpriteNode(color: UIColor.cyanColor(), size: CGSizeMake(self.frame.width, 50))
ground.position = CGPointMake(CGRectGetMidX(sel...
Set scene as delegate
//set your scene as SKPhysicsContactDelegate
class yourScene: SKScene, SKPhysicsContactDelegate
self.physicsWorld.contactDelegate = self;
Then you have to implement one or the other of the contact functions: optional func didBegin(contact:) and/or optional fund didEnd...
MSBuild evaluates PropertyGroup, Choose and ItemGroup elements that are directly under the Project element before those that are in Target elements.
Directly under the Project element, PropertyGroup and Choose elements are evaluated in the order in which they appear, and then ItemGroup elements a...
=SUMPRODUCT((A1:A100<>"")/COUNTIF(A1:A100,A1:A100&""))
counts unique cell values within A1:A100, excluding blank cells and ones with an empty string ("").
How does it do that? Example:
A1:A100 = [1, 1, 2, "apple", "peach", &qu...
