Tutorial by Examples: at

Iterating over Entries

The APCUIterator allows to iterate over entries in the cache: foreach (new APCUIterator() as $entry) { print_r($entry); } The iterator can be initialized with an optional regular expression to select only entries with matching keys: foreach (new APCUIterator($regex) as $entry) { pr...

PHP • APCu

Strategies for lock classes: std::try_to_lock, std::adopt_lock, std::defer_lock

When creating a std::unique_lock, there are three different locking strategies to choose from: std::try_to_lock, std::defer_lock and std::adopt_lock std::try_to_lock allows for trying a lock without blocking: { std::atomic_int temp {0}; std::mutex _mutex; std::thread t( [&...

C++ • Mutexes

Update existing ZIP with Compress-Archive

Compress-Archive -Path C:\Documents\* -Update -DestinationPath C:\Archives\Documents.zip this will add or replace all files Documents.zip with the new ones from C:\Documents

PowerShell • Archive Module

Email Address validation with using Patterns

if (Patterns.EMAIL_ADDRESS.matcher(email).matches()){ Log.i("EmailCheck","It is valid"); }

Android • Email Validation

TreeMap of a simple Java type

First, we create an empty map, and insert some elements into it: Java SE 7 TreeMap<Integer, String> treeMap = new TreeMap<>(); Java SE 7 TreeMap<Integer, String> treeMap = new TreeMap<Integer, String>(); treeMap.put(10, "ten"); treeMap.put(4, "fou...

Java Language • TreeMap and TreeSet

TreeSet of a simple Java Type

First, we create an empty set, and insert some elements into it: Java SE 7 TreeSet<Integer> treeSet = new TreeSet<>(); Java SE 7 TreeSet<Integer> treeSet = new TreeSet<Integer>(); treeSet.add(10); treeSet.add(4); treeSet.add(1); treeSet.add(12); Once we hav...

Java Language • TreeMap and TreeSet

TreeMap/TreeSet of a custom Java type

Since TreeMaps and TreeSets maintain keys/elements according to their natural ordering. Therefor TreeMap keys and TreeSet elements have to comparable to one another. Say we have a custom Person class: public class Person { private int id; private String firstName, lastName; priva...

Java Language • TreeMap and TreeSet

C# Implementation

Before reading some code, it is important to undersand the main concepts that will help to program applications using json. Serialization: Process of converting a object into a stream of bytes that can be sent through applications. The following code can be serialized and converted into the previ...

C# Language • Getting Started: Json with C#

Serialization

static void Main(string[] args) { Book[] books = new Book[3]; Author author = new Author(89,"Aldous Huxley","Author",books); string objectDeserialized = JsonConvert.SerializeObject(author); //Converting author into json } The met...

C# Language • Getting Started: Json with C#

Deserialization

You can receive a json from anywhere, a file or even a server so it is not included in the following code. static void Main(string[] args) { string jsonExample; // Has the previous json Author author = JsonConvert.DeserializeObject<Author>(jsonExample); } The method ".Dese...

C# Language • Getting Started: Json with C#

FormatConditions.Add

Syntax: FormatConditions.Add(Type, Operator, Formula1, Formula2) Parameters: NameRequired / OptionalData TypeTypeRequiredXlFormatConditionTypeOperatorOptionalVariantFormula1OptionalVariantFormula2OptionalVariant XlFormatConditionType enumaration: NameDescriptionxlAboveAverageConditionAbove av...