Tutorial by Examples: rom

We need only one thing in order to delete an item from the Keychain: a CFDictionary with attributes describing the items to be deleted. Any items that match the query dictionary will be deleted permanently, so if you are only intending to delete a single item be sure to be specific with your query. ...

#include <ctype.h> #include <stdio.h> typedef struct { size_t space; size_t alnum; size_t punct; } chartypes; chartypes classify(FILE *f) { chartypes types = { 0, 0, 0 }; int ch; while ((ch = fgetc(f)) != EOF) { types.space += !!isspace(ch); types.al...

#include <ctype.h> #include <stddef.h> typedef struct { size_t space; size_t alnum; size_t punct; } chartypes; chartypes classify(const char *s) { chartypes types = { 0, 0, 0 }; const char *p; for (p= s; p != '\0'; p++) { types.space += !!isspace((unsigned ...

To set the environment to Development SET ASPNETCORE_ENVIRONMENT=Development Now running an Asp.Net Core application will be in the defined environment. Note There should be no space before and after the equality sign =. The command prompt should not be closed before running the application b...

Prerequisites Install pods in your project Install the GooglePlaces SDK Enable location services First we need to get the users location by getting their current longitude and latitude. Import GooglePlaces and GooglePlacePicker import GooglePlaces import GooglePlacePicker Add the...

Normally, we opt this approach if we want complete encapsulation and don't want to make our methods public. Ascx <div style="width: 100%;"> <asp:Button ID="btnAdd" runat="server" Text="Add" OnClick="btnAdd_Click"></asp:butto...

Taggy-lens allows us to use lenses to parse and inspect HTML documents. #!/usr/bin/env stack -- stack --resolver lts-7.0 --install-ghc runghc --package text --package lens --package taggy-lens {-# LANGUAGE OverloadedStrings #-} import qualified Data.Text.Lazy as TL import qualified Data.Tex...

To set up a default SceneKit project you can use the Game Template.

Swift Function for loading an animation from a file: func animationFromSceneNamed(path: String) -> CAAnimation? { let scene = SCNScene(named: path) var animation:CAAnimation? scene?.rootNode.enumerateChildNodes({ child, stop in if let animKey = child.animationKeys.first...

You could migrate from team foundation version control to git by using an open source tool called Git-TF. Migration will also transfer your existing history by converting tfs checkins to git commits. To put your solution into Git by using Git-TF follow these steps: Download Git-TF You can downloa...

To promote a node or set of nodes, run docker node promote from a manager node: docker node promote node-3 node-2 Node node-3 promoted to a manager in the swarm. Node node-2 promoted to a manager in the swarm. To demote a node or set of nodes, run docker node demote from a manager node: doc...

A good VOD (Video On Demand) service should start with the basics. Lets say you have a directory on your server that is not publicly accessible, yet through some sort of portal or paywall you want to allow users to access your media. var movie = path.resolve('./public/' + req.params.filename); ...

One implementation of the io.Reader interface can be found in the bytes package. It allows a byte slice to be used as the source for a Reader. In this example the byte slice is taken from a string, but is more likely to have been read from a file or network connection. message := []byte("Hello...

It is not a good idea to expose Option types to C# code, as C# does not have a way to handle them. The options are either to introduce FSharp.Core as a dependency in your C# project (which is what you'd have to do if you're consuming an F# library not designed for interop with C#), or to change None...

Random mask will show a rundom number from the specified range instead of the actual value: ALTER TABLE Product ALTER COLUMN Price ADD MASKED WITH (FUNCTION = 'random(100,200)') Note that is some cases displayed value might match actual value in column (if randomly selected number matches valu...

Command Structure is sqlcmd -S yourservername\instancename -d database_name -o outputfilename_withpath -Q "your select query" Switches are as follows -S for servername and instance name -d for source database -o for target outputfile (it will create output file) -Q fo...

Consider a base class Vehicle and its derived class Car as follows: #import <Foundation/Foundation.h> @interface Vehicle : NSObject { NSString *vehicleName; NSInteger vehicleModelNo; } - (id)initWithName:(NSString *)name andModel:(NSInteger)modelno; - (void)print; @end ...

First, add the following permissions to the manifest of your project in order to enable device storage access: <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> ...

From an action controller: $this->getLayout()->getBlock('head')->getTemplate(); /** * Get specified tab grid */ public function gridOnlyAction() { $this->_initProduct(); $this->getResponse()->setBody( $this->getLayout()->createBlock('adminhtml/catalog_product_edit_...

In the manifest we have fours dangerous runtime permissions from two groups. <!-- Required to read and write to shredPref file. --> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> <uses-permission android:name="android.permission.READ_EXTE...