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How to sum array of numbers in Ruby?
... using array.map(...).inject(...) is inefficient, you will iterate through all data twice. Try array.inject(0) { |sum, product| sum += product.price }
– everett1992
Apr 4 '13 at 6:11
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How to lazy load images in ListView in Android
...GE"/> Please
create only one instance of ImageLoader and reuse it all around your
application. This way image caching will be much more efficient.
It may be helpful to somebody. It downloads images in the background thread. Images are being cached on an SD card and in memory. The cache ...
How to resize a custom view programmatically?
...om view, extended from RelativeLayout, and I want to resize it programmatically, How can I do?
14 Answers
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How to read a text-file resource into Java unit test? [duplicate]
...
Finally I found a neat solution, thanks to Apache Commons:
package com.example;
import org.apache.commons.io.IOUtils;
public class FooTest {
@Test
public void shouldWork() throws Exception {
String xml = IOUtils.toStri...
Default value in Go's method
...s on the subject, but here are some specific examples.
**Option 1:** The caller chooses to use default values
// Both parameters are optional, use empty string for default value
func Concat1(a string, b int) string {
if a == "" {
a = "default-a"
}
if b == 0 {
b = 5
}
return fmt.S...
How to dismiss keyboard for UITextView with return key?
...urn key is pressed, the keyboard for UITextView will disappear. But actually the return key can only act as '\n'.
34 ...
ImportError: no module named win32api
...m using Python 2.7 and I want to use pywin32-214 on Windows 7 . I installed pywin32-214 by using the msi installer. But when I import win32api in my Python script, it throws the error:
...
How to host a Node.Js application in shared hosting [closed]
... Run the node app from PHP:
<?php
//Choose JS file to run
$file = 'node_modules/jt-js-sample/index.js';
//Spawn node server in the background and return its pid
$pid = exec('PORT=49999 node/bin/node ' . $file . ' >/dev/null 2>&1 & echo $!');
//Wait for node to start up
usleep(50000...
What are the differences between utf8_general_ci and utf8_unicode_ci? [duplicate]
...tf8_unicode_ci uses the standard Unicode Collation Algorithm, supports so called expansions and ligatures, for example:
German letter ß (U+00DF LETTER SHARP S) is sorted near "ss"
Letter Π(U+0152 LATIN CAPITAL LIGATURE OE) is sorted near "OE".
utf8_general_ci does not support expansions/liga...
Requirejs why and when to use shim config
...e the normal, what's shim do in this case? Can I use require( function() { _.extend({}); })? Does it understand _?
– Stiger
Aug 14 '14 at 4:48
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