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What is a elegant way in Ruby to tell if a variable is a Hash or an Array?
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If you want to test if an object is strictly or extends a Hash, use:
value = {}
value.is_a?(Hash) || value.is_a?(Array) #=> true
But to make value of Ruby's duck typing, you could do something like:
value = {}
value.respond_to?(:[]) ...
Difference between $.ajax() and $.get() and $.load()
...: pass arrays of data to the server (POST request)
$( "#objectID" ).load( "test.php", { "choices[]": [ "Jon", "Susan" ] } );
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Remove header and footer from window.print()
...s="http://www.w3.org/1999/xhtml">
<head>
<title>Print Test</title>
<style type="text/css" media="print">
@page
{
size: auto; /* auto is the current printer page size */
margin: 0mm; /* this affects the margin in th...
SQL variable to hold list of integers
...in a List<int> as a parameter, but want to make a local variable for testing in SSMS. It's killer.
– Wade Hatler
Jul 24 '18 at 18:16
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Android: ProgressDialog.show() crashes with getApplicationContext
...'s definitely weird and it's a total hack, but it worked for me. I need to test the bug I was having in 1.6 to see if I can STOP using this.
– Jeremy Logan
Oct 16 '09 at 23:53
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Can you use @Autowired with static fields?
...your autowired component in @PostConstruct method
@Component
public class TestClass {
private static AutowiredTypeComponent component;
@Autowired
private AutowiredTypeComponent autowiredComponent;
@PostConstruct
private void init() {
component = this.autowiredComponent;
}
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How to send SMS in Java
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You Can Do this With A GSM Modem and Java Communications Api [Tried And Tested]
First You Need TO Set Java Comm Api
This Article Describes In Detail How to Set Up Communication Api
Next You Need A GSM Modem (preferably sim900 Module )
Java JDK latest version preferable
AT Command Guide
Code...
Rails: Using greater than/less than with a where statement
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I've only tested this in Rails 4 but there's an interesting way to use a range with a where hash to get this behavior.
User.where(id: 201..Float::INFINITY)
will generate the SQL
SELECT `users`.* FROM `users` WHERE (`users`.`id` &g...
Recommended Fonts for Programming? [closed]
...rogrammer.com/photos/fonts.gif
I find that typing Illegal1 = O0 is a good test of suitability.
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edited Jan 27 '09 at 20:54
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if (key in object) or if(object.hasOwnProperty(key)
...r example.
Say we have the following object with two properties:
function TestObj(){
this.name = 'Dragon';
}
TestObj.prototype.gender = 'male';
Let's create instance of TestObj:
var o = new TestObj();
Let's examine the object instance:
console.log(o.hasOwnProperty('name')); // true
consol...