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How to return a part of an array in Ruby?
...e out of range.
a = [ "a", "b", "c", "d", "e" ]
a[2] + a[0] + a[1] #=> "cab"
a[6] #=> nil
a[1, 2] #=> [ "b", "c" ]
a[1..3] #=> [ "b", "c", "d" ]
a[4..7] #=> [ "e" ]
...
Rails mapping array of hashes onto single hash
...g a method call between each element of it.
For example [1, 2, 3].reduce(0, :+) is like saying 0 + 1 + 2 + 3 and gives 6.
In our case we do something similar, but with the merge function, which merges two hashes.
[{:a => 1}, {:b => 2}, {:c => 3}].reduce({}, :merge)
is {}.merge({:a =&g...
Select every Nth element in CSS
...t;/div>
<h2></h2>
<div>9</div> <div>10</div>
<div>11</div> <div>12</div>
<h2></h2>
<div>13</div> <div>14</div>
<div>15</div> <div>16</div>
</body>
For every...
jQuery show for 5 seconds then hide
...n use .delay() before an animation, like this:
$("#myElem").show().delay(5000).fadeOut();
If it's not an animation, use setTimeout() directly, like this:
$("#myElem").show();
setTimeout(function() { $("#myElem").hide(); }, 5000);
You do the second because .hide() wouldn't normally be on the an...
Find commit by hash SHA in Git
...ind a commit in Git by a given hash, SHA. For example, if I have the "a2c25061" hash, and I need to get the author and the committer of this commit.
...
RegEx to find two or more consecutive chars
...?
– Alexander Mills
Sep 6 '18 at 21:09
16
Alexander, just to clear few things: {2} means that the...
Move an item inside a list?
...
answered Jul 3 '10 at 23:15
David ZDavid Z
111k2323 gold badges218218 silver badges256256 bronze badges
...
Javascript: formatting a rounded number to N decimals
...contain information about significant digits; the value 2 is the same as 2.0000000000000. It's when you turn the rounded value into a string that you have make it display a certain number of digits.
You could just add zeroes after the number, something like:
var s = number.toString();
if (s.indexO...
Center/Set Zoom of Map to cover all visible Markers?
...
690
You need to use the fitBounds() method.
var markers = [];//some array
var bounds = new google.m...
AutoLayout with hidden UIViews?
...best way using AutoLayout to respond to hidden views as if their frame was 0x0. Here is an example of a dynamic list of 1-3 features.
...