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What is the difference between Flex/Lex and Yacc/Bison?
...that.
Yacc and Bison are pretty closely compatible, though Bison has some extra tricks it can do.
You probably can't find legitimate copies of (the original, AT&T versions of) Lex and Yacc to install on Ubuntu. I wouldn't necessarily say it is impossible, but I'm not aware of such. Flex and ...
What really happens in a try { return x; } finally { x = null; } statement?
...'s a short program to demonstrate:
using System;
class Test
{
static string x;
static void Main()
{
Console.WriteLine(Method());
Console.WriteLine(x);
}
static string Method()
{
try
{
x = "try";
return x;
}
...
Flask vs webapp2 for Google App Engine
..., webapp2 has a big chance to be included in a future SDK release (this is extra-official, don't quote me :-) which will push it forward and bring new developers and contributions.
That said, I'm a big fan of Werkzeug and the Pocoo guys and borrowed a lot from Flask and others (web.py, Tornado), bu...
What does ** (double star/asterisk) and * (star/asterisk) do for parameters?
...
The single * means that there can be any number of extra positional arguments. foo() can be invoked like foo(1,2,3,4,5). In the body of foo() param2 is a sequence containing 2-5.
The double ** means there can be any number of extra named parameters. bar() can be invoked like...
NoClassDefFoundError: android.support.v7.internal.view.menu.MenuBuilder
...ns and change the app flow:
public static boolean isSamsung_4_2_2() {
String deviceMan = Build.MANUFACTURER;
String deviceRel = Build.VERSION.RELEASE;
return "samsung".equalsIgnoreCase(deviceMan) && deviceRel.startsWith("4.2.2");
}
Then in the activity's onCreate method:
if (...
JavaScript: What are .extend and .prototype used for?
...ethods to an object's prototype (you see this a lot in libraries to add to String, Date, Math, or even Function) those methods are added to every new instance of that object.
share
|
improve this a...
range over interface{} which stores a slice
...
package main
import "fmt"
import "reflect"
func main() {
data := []string{"one","two","three"}
test(data)
moredata := []int{1,2,3}
test(moredata)
}
func test(t interface{}) {
switch reflect.TypeOf(t).Kind() {
case reflect.Slice:
s := reflect.ValueOf(t)
...
How should a model be structured in MVC? [closed]
... because I am lazy:
public function loginWithPassword(Identity $identity, string $password): string
{
if ($identity->matchPassword($password) === false) {
$this->logWrongPasswordNotice($identity, [
'email' => $identity->getEmailAddress(),
'key' => ...
Are there strongly-typed collections in Objective-C?
...will generate compiler warnings if there is a type mismatch.
NSArray<NSString*>* arr = @[@"str"];
NSString* string = [arr objectAtIndex:0];
NSNumber* number = [arr objectAtIndex:0]; // Warning: Incompatible pointer types initializing 'NSNumber *' with an expression of type 'NSString *'
And...
Struggling with NSNumberFormatter in Swift for currency
.../ In Swift 4, this ^ has been renamed to simply NSLocale.current
formatter.string(from: price) // "$123.44"
formatter.locale = Locale(identifier: "es_CL")
formatter.string(from: price) // $123"
formatter.locale = Locale(identifier: "es_ES")
formatter.string(from: price) // "123,44 €"
Here's ...