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Generating Guids in Ruby
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As of Ruby 1.9, uuid generation is built-in. Use the SecureRandom.uuid function.
For example:
require 'securerandom'
SecureRandom.uuid # => "96b0a57c-d9ae-453f-b56f-3b154eb10cda"
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How do you create optional arguments in php?
...ed null as default argument in the first example, not $timestamp = time(), and combined it with a null check. Literals include arrays (array() or []), booleans, numbers, strings, and null.
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Why doesn't Python have multiline comments?
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one disadvantage of mix multi-line string and block comments is IDE has no idea what you want thus can't show comment in different style as needed.
– Baiyan Huang
Sep 17 '12 at 3:58
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How to check whether mod_rewrite is enable on server?
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from the command line, type
sudo a2enmod rewrite
if the rewrite mode is already enabled, it will tell you so!
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How can I change CSS display none or block property using jQuery?
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The correct way to do this is to use show and hide:
$('#id').hide();
$('#id').show();
An alternate way is to use the jQuery css method:
$("#id").css("display", "none");
$("#id").css("display", "block");
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Add .gitignore to gitignore
...ery repository on your machine you can create the file ~/.gitignore_global and then run
git config --global core.excludesfile ~/.gitignore_global
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What is the use of static variable in C#? When to use it? Why can't I declare the static variable in
... just declare the int variable. When I run this code the output will be 10 and 10. Its simple.
Now let's look at the static variable here; I am declaring the variable as a static.
Example with static variable:
public class Variable
{
public static int i = 5;
public void test()
{
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How do I create a foreign key in SQL Server?
I have never "hand-coded" object creation code for SQL Server and foreign key decleration is seemingly different between SQL Server and Postgres. Here is my sql so far:
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Using Moq to mock an asynchronous method for a unit test
...ked great. I figured it was probably something simple that I wasn't understanding.
– mvanella
Dec 31 '13 at 15:54
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How to use int.TryParse with nullable int? [duplicate]
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Like Daniel's code, but fixed in terms of the second argument, trimming, and avoiding comparisons with Boolean constants:
int tmp;
if (!int.TryParse(strValue.Trim(), out tmp))
{
break;
}
intVal = tmp;
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