Tutorial by Examples: d

The random number generator can (and should) be used for multiple distributions. #include <iostream> #include <random> int main() { std::default_random_engine pseudo_random_generator; std::uniform_int_distribution<int> int_distribution(0, 9); std::uniform_real_dis...
If you have a type definition file (d.ts) for the module, you can use an import statement. import _ = require('lodash'); If you don't have a definition file for the module, TypeScript will throw an error on compilation because it cannot find the module you are trying to import. In this case, yo...
Using code UILabel.lineBreakMode: NSLineBreakMode Swift label.lineBreakMode = .ByTruncatingTail .ByWordWrapping .ByCharWrapping .ByClipping .ByTruncatingHead .ByTruncatingTail .ByTruncatingMiddle Swift 3 label.lineBreakMode = .byTruncatingTail .byWordWrapping .byCharWrapping...
Define a new type Person using namedtuple like this: Person = namedtuple('Person', ['age', 'height', 'name']) The second argument is the list of attributes that the tuple will have. You can list these attributes also as either space or comma separated string: Person = namedtuple('Person', 'age,...
By default, Interface Builder doesn't accept the CGColor datatype, so to allow adding a CGColor using user defined attributes in interface builder; one may want to use an extension like this: Swift Extension : extension CALayer { func borderUIColor() -> UIColor? { return borderCol...
Exceptions are errors which occur when a program is executing. Consider the Java program below which divides two integers. class Division { public static void main(String[] args) { int a, b, result; Scanner input = new Scanner(System.in); System.out.println(&qu...
NSSet *set = [NSSet set]; NSArray *array = [NSArray array]; NSArray *fromSet = [set allObjects]; NSSet *fromArray = [NSSet setWithArray:array];
IMPORTANT: This delegate method is only called in the foreground. Swift func application(application: UIApplication, didReceiveLocalNotification notification: UILocalNotification) { } Objective-C - (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotifi...
Function DisableShift() 'This function disable the shift at startup. This action causes 'the Autoexec macro and Startup properties to always be executed. On Error GoTo errDisableShift Dim db As DAO.Database Dim prop As DAO.Property Const conPropNotFound = 3270 Set db = C...
Function EnableShift() 'This function enables the SHIFT key at startup. This action causes 'the Autoexec macro and the Startup properties to be bypassed 'if the user holds down the SHIFT key when the user opens the database. On Error GoTo errEnableShift Dim db As DAO.Database Dim p...
Tuples can be compared based on their elements. As an example, an enumerable whose elements are of type Tuple can be sorted based on comparisons operators defined on a specified element: List<Tuple<int, string>> list = new List<Tuple<int, string>>(); list.Add(new Tuple<...
References behaves similarly, but not entirely like const pointers. A reference is defined by suffixing an ampersand & to a type name. int i = 10; int &refi = i; Here, refi is a reference bound to i. References abstracts the semantics of pointers, acting like an alias to the underlying...
The strchr and strrchr functions find a character in a string, that is in a NUL-terminated character array. strchr return a pointer to the first occurrence and strrchr to the last one. #include <stdio.h> #include <stdlib.h> #include <string.h> int main(void) { char toSe...
To use the IronPython command line, open ipy.exe or ipy64.exe. Both files are located in the path that was selected during installation. By default they will be located at C:\Program Files\IronPython 2.7\. Then start writing your statements directly in the IronPython command line. For example: pr...
ALTER TABLE EMPLOYEES ADD pk_EmployeeID PRIMARY KEY (ID) This will add a Primary key to the table Employees on the field ID. Including more than one column name in the parentheses along with ID will create a Composite Primary Key. When adding more than one column, the column names must be separat...
$orderid = 12345; $order = Mage::getModel('sales/order')->load($orderid); The above code is roughly analogous to the following SQL query. select * from sales_flat_order where entity_id=12345;
$incrementid = 100000000; $order = Mage::getModel('sales/order')->loadByIncrementId($incrementid); The above code is roughly analogous to the following SQL query. select * from sales_flat_order where increment_id=100000000; The increment_id is the customer facing order identifier, whereas...
Sort an enumeration in either ascending or descending order Synonyms: Sort-Object sort Assuming: $names = @( "Aaron", "Aaron", "Bernie", "Charlie", "Danny" ) Ascending sort is the default: $names | Sort-Object $names | sort Aaron Aa...
Class methods present alternate ways to build instances of classes. To illustrate, let's look at an example. Let's suppose we have a relatively simple Person class: class Person(object): def __init__(self, first_name, last_name, age): self.first_name = first_name self.last...
This is a very common Exception. It causes your application to stop during the start or execution of your app. In the LogCat you see the message: android.content.ActivityNotFoundException : Unable to find explicit activity class; have you declared this activity in your AndroidManifest.xml? In ...

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