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Difference between decimal, float and double in .NET?
...n a decimal form, and expect exact results in decimal representations; not all decimal numbers are exactly representable in binary floating point – 0.1, for example – so if you use a binary floating point value you'll actually get an approximation to 0.1. You'll still get approximations when usi...
Five equal columns in twitter bootstrap
...t;
<div class="span2"></div>
</div>
Voila!
Five equally spaced and centered columns.
In bootstrap 3.0, this code would look like
<div class="row">
<div class="col-md-2 col-md-offset-1"></div>
<div class="col-md-2"></div>
<div c...
Are class names in CSS selectors case sensitive?
...
CSS selectors are generally case-insensitive; this includes class and ID selectors.
But HTML class names are case-sensitive (see the attribute definition), and that's causing a mismatch in your second example. This has not changed in HTML5.1
This...
How can I keep my branch up to date with master with git?
...
Assuming you're fine with taking all of the changes in master, what you want is:
git checkout <my branch>
to switch the working tree to your branch; then:
git merge master
to merge all the changes in master with yours.
...
How to update attributes without validation
...a.attributes({ ... }).save(false) instead. Or if you don't care (or want) callbacks to be run, checkout update_column.
– Joshua Pinter
Dec 10 '12 at 2:45
27
...
How to flatten tree via LINQ?
...lt;T>> f
) => e.SelectMany(c => f(c).Flatten(f)).Concat(e);
Call this function like this:
IEnumerable<MyNode> tree = ....
var res = tree.Flatten(node => node.Elements);
If you would prefer flattening in pre-order rather than in post-order, switch around the sides of the Con...
PHP best way to MD5 multi-dimensional array?
...ll work.
md5(serialize($array));
However, it's worth noting that (ironically) json_encode performs noticeably faster:
md5(json_encode($array));
In fact, the speed increase is two-fold here as (1) json_encode alone performs faster than serialize, and (2) json_encode produces a smaller string an...
In JavaScript, does it make a difference if I call a function with parentheses?
I noticed a difference when calling a function with empty parentheses, or without any parentheses at all. However, I am not passing any arguments to the function so I wondered, what would be the difference between:
...
String output: format or concat in C#?
...le with an existing IL rewriter such as PostSharp.
– Allon Guralnek
Sep 29 '11 at 15:24
31
String...
get NSDate today, yesterday, this Week, last Week, this Month, last Month… variables
...ve the seconds into the day if you want
NSDate *today = [NSDate date];
// All intervals taken from Google
NSDate *yesterday = [today dateByAddingTimeInterval: -86400.0];
NSDate *thisWeek = [today dateByAddingTimeInterval: -604800.0];
NSDate *lastWeek = [today dateByAddingTimeInterval: -1209600.0]...