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How do I check if an element is really visible with JavaScript? [duplicate]
...,y), to me it is the fastest way to test if an element is nested or hidden by another. You can pass the offsets of the targetted element to the function.
Here's PPK test page on elementFromPoint.
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What does auto&& tell us?
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By using auto&& var = <initializer> you are saying: I will accept any initializer regardless of whether it is an lvalue or rvalue expression and I will preserve its constness. This is typically used for forwardi...
What is Bootstrap?
...t understood that it is a front-end helper. I have tried to find something by Googling, but found nothing specific. Everything I found is related to the computer science definition.
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How do I specify local .gem files in my Gemfile?
...talling .gem packages, but you can specify all kinds of locations on a gem-by-gem basis by editing your Gemfile.
Specifying a :path attribute will install the gem from that path on your local machine.
gem "foreman", path: "/Users/pje/my_foreman_fork"
Alternately, specifying a :git attribute will...
How do I use floating-point division in bash?
...IDTH/$IMG2_WIDTH") without $(( )) (double parentheses) ; which is expanded by the bash before executing command
– Nahuel Fouilleul
Oct 4 '12 at 7:32
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MySQL stored procedure vs function, which would I use when?
...y, or both. This means that a procedure can pass values back to the caller by using output parameters. These values can be accessed in statements that follow the CALL statement. Functions have only input parameters. As a result, although both procedures and functions can have parameters, procedure p...
Sample random rows in dataframe
...red Nov 25 '11 at 19:15
John ColbyJohn Colby
20.3k33 gold badges5151 silver badges6767 bronze badges
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Why is there a difference in checking null against a value in VB.NET and C#?
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VB.NET and C#.NET are different languages, built by different teams who have made different assumptions about usage; in this case the semantics of a NULL comparison.
My personal preference is for the VB.NET semantics, which in essence gives NULL the semantics "I don't know...
How do I decode HTML entities in Swift?
...gt;
becomes
4 < 5 & 3 > 2
On OS X there is CFXMLCreateStringByUnescapingEntities() which does the job:
let encoded = "<strong> 4 &lt; 5 &amp; 3 &gt; 2 .</strong> Price: 12 &#x20ac;. &#64; "
let decoded = CFXMLCreateStringByUnescapingEntities(nil, enco...
grepping using the “|” alternative operator
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By default, grep treats the typical special characters as normal characters unless they are escaped. So you could use the following:
grep 'gene\|exon' AT5G60410.gff
However, you can change its mode by using the following f...