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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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Using DNS to redirect to another URL with a path [closed]
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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...
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...
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...
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...
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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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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What do the parentheses around a function name mean?
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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...
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(...