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Determine function name from within that function (without using traceback)
...
import inspect
def foo():
print(inspect.stack()[0][3])
print(inspect.stack()[1][3]) #will give the caller of foos name, if something called foo
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Advanced JavaScript: Why is this function wrapped in parentheses? [duplicate]
...ction won't affect the global scope. You could use this instead:
function foo() {
// Some code
}
foo();
But this requires giving a name to the function, which is not always necessary. Using a named function also means at some future point the function could be called again which might not be de...
Using DNS to redirect to another URL with a path [closed]
...
if you use AWS, a redirect like
mail.foo.com --> mail.google.com/a/foo.com
can be setup as follows:
in s3, create an empty bucket "mail.foo.com"
under Properties -> Static Website Hosting, set "redirect all requests to: mail.google.com/a/foo.com"
in ro...
Grep and Sed Equivalent for XML Command Line Processing
...ng tools to process XML.
Example. q.xml:
<?xml version="1.0"?>
<foo>
text
more text
<textnode>ddd</textnode><textnode a="bv">dsss</textnode>
<![CDATA[ asfdasdsa <foo> sdfsdfdsf <bar> ]]>
</foo>
xml2 < q.xml
/foo=
/fo...
Drop all duplicate rows across multiple columns in Python Pandas
...ates and the keep parameter.
import pandas as pd
df = pd.DataFrame({"A":["foo", "foo", "foo", "bar"], "B":[0,1,1,1], "C":["A","A","B","A"]})
df.drop_duplicates(subset=['A', 'C'], keep=False)
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How can I sort arrays and data in PHP?
...dimensional arrays, including arrays of objects
$array = array(
array('foo' => 'bar', 'baz' => 42),
array('foo' => ..., 'baz' => ...),
...
);
If you want to sort $array by the key 'foo' of each entry, you need a custom comparison function. The above sort and related functi...
What do the parentheses around a function name mean?
...
In the absence of any preprocessor stuff going on, foo's signature is equivalent to
int foo (int *bar)
The only context in which I've seen people putting seemingly unnecessary parentheses around function names is when there are both a function and a function-like macro wit...
What is the instanceof operator in JavaScript?
...al inheritance.
For example, let's define a type and a subtype:
function Foo(){ //a Foo constructor
//assign some props
return this;
}
function SubFoo(){ //a SubFoo constructor
Foo.call( this ); //inherit static props
//assign some new props
return this;
}
SubFoo.prototype = ...
Why don't C++ compilers define operator== and operator!=?
... Viktor, I suggest you re-think your response. If the class Foo contains a Bar*, then how would the compiler know whether Foo::operator== wants to compare the address of Bar*, or the contents of Bar?
– Mark Ingram
Sep 1 '10 at 13:59
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How do I implement IEnumerable
...>'s GetEnumerator in the explicit implementation of IEnumerable:
class FooCollection : IEnumerable<Foo>, IEnumerable
{
SomeCollection<Foo> foos;
// Explicit for IEnumerable because weakly typed collections are Bad
System.Collections.IEnumerator IEnumerable.GetEnumerator(...