Tutorial by Examples: l

public static void main(String args[]) { StringTokenizer st = new StringTokenizer("apple,ball cat,dog", ","); while (st.hasMoreTokens()) { System.out.println(st.nextToken()); } } Output: apple ball cat dog
Parent element html <child-component [isSelected]="inputPropValue"></child-component> Parent element ts export class AppComponent { inputPropValue: true } Child component ts: export class ChildComponent { @Input() inputPropValue = false; } Child compone...
The easiest way to connect via curl to a different server is to alter the hosts file on your machine. On Linux and Unix systems, the hosts file is located in /etc/hosts, while on Windows systems it will be located in c:\windows\system32\drivers\etc\hosts. Once you open the file with a text editor ...
from django.contrib.auth.models import User class UserAdmin(admin.ModelAdmin): list_display = ('email', 'first_name', 'last_name') list_filter = ('is_staff', 'is_superuser') admin.site.unregister(User) admin.site.register(User, UserAdmin) We need to unregister before regis...
First is first, ensure that USE_TZ = True in your settings.py file. Also set a default time zone value to TIME_ZONE such as TIME_ZONE='UTC'. View a complete list of timezones here. If USE_TZ is False, TIME_ZONE will be the time zone that Django will use to store all datetimes. When USE_TZ is enable...
I wrote a simple C code foo.c int main() { int i = 0; int j = 0; for (i = 0; i < 5; i++) { j = i + 1; } return 0; } When compiled with -O0 i.e. by disabling all compiler optimizations $ gcc -o foo.S foo.c -O0 -S I got this: .file "foo.c&...
Declaring a DLL procedure to work with different VBA versions: Option Explicit #If Win64 Then Private Declare PtrSafe Sub xLib "Kernel32" Alias "Sleep" (ByVal dwMilliseconds As Long) #ElseIf Win32 Then Private Declare Sub apiSleep Lib "Kernel32" Ali...
Option Explicit #If Win64 Then 'Win64 = True, Win32 = False, Win16 = False Private Declare PtrSafe Sub apiCopyMemory Lib "Kernel32" Alias "RtlMoveMemory" (MyDest As Any, MySource As Any, ByVal MySize As Long) Private Declare PtrSafe Sub apiExitProcess Lib "Kern...
#ElseIf Win32 Then 'Win32 = True, Win16 = False Private Declare Sub apiCopyMemory Lib "Kernel32" Alias "RtlMoveMemory" (MyDest As Any, MySource As Any, ByVal MySize As Long) Private Declare Sub apiExitProcess Lib "Kernel32" Alias "ExitProcess" (ByVa...
hello_world.c #include <linux/module.h> #include <linux/kernel.h> #include <linux/init.h> #define AUTHOR "Bruce Lee" #define DESC "Hello World driver" static int __init init(void) { printk(KERN_DEBUG "Hello World\n"); return 0;...
https://logging.apache.org/log4cxx/ currently undergoing Incubation - there is no official release update/bug fixes once in the past 12 years, last release was 2008 user can select different LogLevels – TRACE, DEBUG, INFO, WARN, ERROR, and FATAL hierarchical Loggers it is possible to log asy...
https://sourceforge.net/projects/log4cplus/ updates/bug fixes - last release was Jan. 2016 user can select select different LogLevels – TRACE, DEBUG, INFO, WARN, ERROR, and FATAL hierarchical Loggers supports multi–threaded applications but is not safe to be used from asynchronous signals’ ha...
https://sourceforge.net/projects/log4cpp/ bug fixes are about once a year, last release was April 2015 supports multi-threaded applications •no clear documentation exist is licensed under the GNU Lesser General Public License (LGPL) as of version 0.2.1, before that have been released under the...
val foo : Int by lazy { 1 + 1 } println(foo) The example prints 2.
var foo : Int by Delegates.observable("1") { property, oldValue, newValue -> println("${property.name} was changed from $oldValue to $newValue") } foo = 2 The example prints foo was changed from 1 to 2
class MyDelegate { operator fun getValue(owner: Any?, property: KProperty<*>): String { return "Delegated value" } } val foo : String by MyDelegate() println(foo) The example prints Delegated value
interface Foo { fun example() } class Bar { fun example() { println("Hello, world!") } } class Baz(b : Bar) : Foo by b Baz(Bar()).example() The example prints Hello, world!
val a = Array(3) { i -> i * 2 } // creates an Array<Int> of size 3 containing [0, 2, 4]
val a = arrayOfNulls<Int>(3) // creates an Array<Int?> of [null, null, null] The returned array will always have a nullable type. Arrays of non-nullable items can't be created uninitialized.
General-purpose stopwatch for timing how long a function takes to run: object Benchmark { fun realtime(body: () -> Unit): Duration { val start = Instant.now() try { body() } finally { val end = Instant.now() return Duration.b...

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