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Actual meaning of 'shell=True' in subprocess
I am calling different processes with the subprocess module. However, I have a question.
5 Answers
...
What is an xs:NCName type and when should it be used?
I ran one of my xml files through a schema generator and everything generated was what was expected, with the exception of one node:
...
Execute bash script from URL
Say I have a file at the URL "http://mywebsite.com/myscript.txt" that contains a script:
14 Answers
...
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);
}
});
...
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 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 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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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 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 ...
What is the meaning of the 'g' flag in regular expressions?
...y starts searching at the lastIndex.
// regular regex
const regex = /foo/;
// same regex with global flag
const regexG = /foo/g;
const str = " foo foo foo ";
const test = (r) => console.log(
r,
r.lastIndex,
r.test(str),
r.lastIndex
);
// Test the normal one...