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What does $$ (dollar dollar or double dollar) mean in PHP?
... resolves a variable by that string.
So, consider this example
$inner = "foo";
$outer = "inner";
The variable:
$$outer
would equal the string "foo"
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...
Private pages for a private Github repo
...ation and also here on SO. But I was wondering if there could be a http://foo.github.com for a private repository named foo which is accessible only one had access to the foo repository itself.
...
What is the difference between parseInt(string) and Number(string) in JavaScript? [duplicate]
...dendum to @sjngm's answer:
They both also ignore whitespace:
var foo = " 3 "; console.log(parseInt(foo)); // 3
console.log(Number(foo)); // 3
It is not exactly correct. As sjngm wrote parseInt parses string to first number. It is true. But the problem is when you want to parse ...
How to access array elements in a Django template?
...o template is used for four different notations in Python. In a template, foo.bar can mean any of:
foo[bar] # dictionary lookup
foo.bar # attribute lookup
foo.bar() # method call
foo[bar] # list-index lookup
It tries them in this order until it finds a match. So foo.3 wi...
How do I set up a basic Ruby project?
...e the conventions I have most often seen (assuming your project's name is "foo"):
/lib/foo.rb - Defines the top-level namespace of the project and its version; requires needed files.
/lib/foo/ - Contains all classes for your project, including error-related classes.
/test/ - Contains tests for you...
How to check if object (variable) is defined in R?
...
See ?exists, for some definition of "...is defined". E.g.
> exists("foo")
[1] FALSE
> foo <- 1:10
> exists("foo")
[1] TRUE
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Performance difference between IIf() and If
...hink:
' Usage 1
Dim result = If(a > 5, "World", "Hello")
' Usage 2
Dim foo = If(result, "Alternative")
The first is basically C#'s ternary conditional operator and the second is its coalesce operator (return result unless it’s Nothing, in which case return "Alternative"). If has thus replace...
How can I do string interpolation in JavaScript?
...rafting of the spec. Use them like this:
> var n = 42;
undefined
> `foo${n}bar`
'foo42bar'
You can use any valid JavaScript expression inside the {}. For example:
> `foo${{name: 'Google'}.name}bar`
'fooGooglebar'
> `foo${1 + 3}bar`
'foo4bar'
The other important thing is, you don't ...
How to split one string into multiple variables in bash shell? [duplicate]
...how you can read each individual character into array elements:
$ read -a foo <<<"$(echo "ABCDE-123456" | sed 's/./& /g')"
Dump the array:
$ declare -p foo
declare -a foo='([0]="A" [1]="B" [2]="C" [3]="D" [4]="E" [5]="-" [6]="1" [7]="2" [8]="3" [9]="4" [10]="5" [11]="6")'
If there...
jQuery send string as POST parameters
.../Same_origin_policy
url: 'http://nakolesah.ru/',
data: {
'foo': 'bar',
'ca$libri': 'no$libri' // <-- the $ sign in the parameter name seems unusual, I would avoid it
},
success: function(msg){
alert('wow' + msg);
}
});
...