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What does Ruby have that Python doesn't, and vice versa?
...nction, pass it around as an object, and overwrite it:
def func(): print "hello"
def another_func(f): f()
another_func(func)
def func2(): print "goodbye"
func = func2
This is a fundamental feature of modern scripting languages. JavaScript and Lua do this, too. Ruby doesn't treat functions this...
How to check whether an object is a date?
...; //=> false
2..is(String,Function,Number,RegExp); //=> true
'hello'.is(String); //=> true
'hello'.is(); //-> String
/[a-z]/i.is(); //-> RegExp
some.is(); //=> 'ANONYMOUS_CONSTRUCTOR'...
How to redirect 404 errors to a page in ExpressJS?
...tic(__dirname + '/public'));
app.get('/', function(req, res){
res.send('hello world');
});
//The 404 Route (ALWAYS Keep this as the last route)
app.get('*', function(req, res){
res.send('what???', 404);
});
app.listen(3000, '127.0.0.1');
alfred@alfred-laptop:~/node/stackoverflow/6528876$ ...
Usages of Null / Nothing / Unit in Scala
...ou do something, use output type Unit
object Run extends App {
//def sayHello(): Nothing = println("hello?")
def sayHello(): Unit = println("hello?")
sayHello()
}
... then how to use Nothing?
trait Option[E]
case class Some[E](value: E) extends Option[E]
case object None extends Option[Not...
Android - Package Name convention
For the "Hello World" example in android.com , the package name is
"package com.example.helloandroid;"
6 Answers
...
How to open emacs inside bash
...
emacs hello.c -nw
this is to open a hello.c file using emacs inside the terminal
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Strangest language feature
...
Don't forget "Hello World"[i]. Or i["Hello World"]
– Richard Pennington
Jan 3 '10 at 15:12
...
Cocoa Autolayout: content hugging vs content compression resistance priority
...<NSContentSizeLayoutConstraint:0x7fd82982af90 H:[UILabel:0x7fd82980e5e0'Hello'(39)] Hug:250 CompressionResistance:750>
<NSContentSizeLayoutConstraint:0x7fd82982b4f0 V:[UILabel:0x7fd82980e5e0'Hello'(21)] Hug:250 CompressionResistance:750>
...
JavaScript query string [closed]
...- such as hex character encoding where %20 represents a space (example: ?a=Hello%20World) or the plus symbol being used to represent a space (example: ?a=Hello+World).
Node.js offers what looks like a very complete solutions to querystring parsing. It would be easy to take out and use in your own p...
Changing one character in a string
...as lists; turn them into strings only when needed.
>>> s = list("Hello zorld")
>>> s
['H', 'e', 'l', 'l', 'o', ' ', 'z', 'o', 'r', 'l', 'd']
>>> s[6] = 'W'
>>> s
['H', 'e', 'l', 'l', 'o', ' ', 'W', 'o', 'r', 'l', 'd']
>>> "".join(s)
'Hello World'
Pytho...