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Socket.IO Authentication
...se Socket.IO in Node.js, and am trying to allow the server to give an identity to each of the Socket.IO clients. As the socket code is outside the scope of the http server code, it doesn't have easy access to the request information sent, so I'm assuming it will need to be sent up during the connec...
How to get the number of Characters in a String?
...t, as illustrated in this script: the length of "World" might be 6 (when written in Chinese: "世界"), but its rune count is 2:
package main
import "fmt"
import "unicode/utf8"
func main() {
fmt.Println("Hello, 世界", len("世界"), utf8.RuneCountInString("世界"))
}
Phrozen adds in the co...
throw new std::exception vs throw std::exception
...to throw and catch exceptions is to throw an exception object and to catch it by reference (usually const reference). The C++ language requires the compiler to generate the appropriate code to construct the exception object and to properly clean it up at the appropriate time.
Throwing a pointer to ...
Printing 1 to 1000 without loop or conditionals
Task : Print numbers from 1 to 1000 without using any loop or conditional statements. Don't just write the printf() or cout statement 1000 times.
...
Convert a list of characters into a string
...e the join method of the empty string to join all of the strings together with the empty string in between, like so:
>>> a = ['a', 'b', 'c', 'd']
>>> ''.join(a)
'abcd'
share
|
im...
How to find unused images in an Xcode project?
... + A
and they won't be grayed out.
For files which are not referenced neither in xib nor in code, something like this might work:
#!/bin/sh
PROJ=`find . -name '*.xib' -o -name '*.[mh]'`
find . -iname '*.png' | while read png
do
name=`basename $png`
if ! grep -qhs "$name" "$PROJ"; then
...
Android Emulator: Installation error: INSTALL_FAILED_VERSION_DOWNGRADE
...
It means you're trying to install an app with the same packageName as an app that's already installed on the emulator, but the one you're trying to install has a lower versionCode (integer value for your version number).
You...
Tools for analyzing performance of a Haskell program
...t of Real World Haskell.
GC Statistics
Firstly, ensure you're compiling with ghc -O2. And you might make sure it is a modern GHC (e.g. GHC 6.12.x)
The first thing we can do is check that garbage collection isn't the problem.
Run your program with +RTS -s
$ time ./A +RTS -s
./A +RTS -s
749700
...
Difference between View and table in sql
...ore or less, depending on your database).
The advantage of a view is that it can join data from several tables thus creating a new view of it. Say you have a database with salaries and you need to do some complex statistical queries on it.
Instead of sending the complex query to the database all t...
Input type=password, don't let browser remember the password
...
Try using autocomplete="off". Not sure if every browser supports it, though. MSDN docs here.
EDIT: Note: most browsers have dropped support for this attribute. See Is autocomplete="off" compatible with all modern browsers?
This is arguably something that should be left up to the user ra...