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C++ Tuple vs Struct
... similar discussion about tuple and struct and I write some simple benchmarks with the help from one of my colleague to identify the differences in term of performance between tuple and struct. We first start with a default struct and a tuple.
struct StructData {
int X;
int Y;
double C...
How to add http:// if it doesn't exist in the URL?
...
A modified version of @nickf code:
function addhttp($url) {
if (!preg_match("~^(?:f|ht)tps?://~i", $url)) {
$url = "http://" . $url;
}
return $url;
}
Recognizes ftp://, ftps://, http:// and https:// in a case insensitive way.
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What is the meaning of the 'g' flag in regular expressions?
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iota
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answered Oct 20 '12 at 23:40
sachleensachleen
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in_array multiple values
How do I check for multiple values, such as:
6 Answers
6
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Could not load file or assembly 'Newtonsoft.Json' or one of its dependencies. Manifest definition do
...my projects used the same version by running the following command and checking the results:
update-package Newtonsoft.Json -reinstall
And, lastly I removed the following from my web.config:
<dependentAssembly>
<assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6a...
Rails where condition using NOT NIL
...s.id' => nil)
Foo.includes(:bar).where.not(bars: { id: nil })
When working with scopes between tables, I prefer to leverage merge so that I can use existing scopes more easily.
Foo.includes(:bar).merge(Bar.where.not(id: nil))
Also, since includes does not always choose a join strategy, you s...
Why use Ruby's attr_accessor, attr_reader and attr_writer?
...uby has this handy and convenient way to share instance variables by using keys like
5 Answers
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How to add text at the end of each line in Vim?
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Alan CurryAlan Curry
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datetime dtypes in pandas read_csv
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Why it does not work
There is no datetime dtype to be set for read_csv as csv files can only contain strings, integers and floats.
Setting a dtype to datetime will make pandas interpret the datetime as an object, meaning you will end up with ...
Get specific ArrayList item
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As many have already told you:
mainList.get(3);
Be sure to check the ArrayList Javadoc.
Also, be careful with the arrays indices: in Java, the first element is at index 0. So if you are trying to get the third element, your solution would be mainList.get(2);
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