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What is the difference between char * const and const char *?
...ple variables are specified in the same declaration? I believe const int *foo,*bar; would declare both foo and bar to be int const *, but int const *foo, *bar would declare foo to be a int const * and bar to be int *. I think typedef int * intptr; const intptr foo,bar; would declare both variables...
Difference between `set`, `setq`, and `setf` in Common Lisp?
...TF, just the SET function.
What is now written as:
(setf (symbol-value '*foo*) 42)
was written as:
(set (quote *foo*) 42)
which was eventually abbreviavated to SETQ (SET Quoted):
(setq *foo* 42)
Then lexical variables happened, and SETQ came to be used for assignment to them too -- so it w...
Executing periodic actions in Python [duplicate]
I am working on Windows. I want to execute a function foo() every 10 seconds.
9 Answers
...
Simple argparse example wanted: 1 argument, 3 results
...ser(description='Description of your program')
parser.add_argument('-f','--foo', help='Description for foo argument', required=True)
parser.add_argument('-b','--bar', help='Description for bar argument', required=True)
args = vars(parser.parse_args())
args will be a dictionary containing the argum...
jQuery Data vs Attr?
...lement from the server, you should set the data on the element:
<a id="foo" data-foo="bar" href="#">foo!</a>
The data can then be accessed using .data() in jQuery:
console.log( $('#foo').data('foo') );
//outputs "bar"
However when you store data on a DOM node in jQuery using data, ...
What is a “symbol” in Julia?
...its own variables. I.e., you need a way to represent – as data – the foo on the left hand side of this:
foo == "foo"
Now we're getting to the heart of the matter: the difference between a symbol and a string is the difference between foo on the left hand side of that comparison and "foo" on...
Class vs. static method in JavaScript
...t is primarily a prototypal language, rather than a class-based language1. Foo isn't a class, it's a function, which is an object. You can instantiate an object from that function using the new keyword which will allow you to create something similar to a class in a standard OOP language.
I'd sugge...
How to concatenate string variables in Bash
...
foo="Hello"
foo="${foo} World"
echo "${foo}"
> Hello World
In general to concatenate two variables you can just write them one after another:
a='Hello'
b='World'
c="${a} ${b}"
echo "${c}"
> Hello World
...
partial string formatting
...ct):
def __missing__(self, key):
return "{" + key + "}"
s = '{foo} {bar}'
formatter = string.Formatter()
mapping = FormatDict(foo='FOO')
print(formatter.vformat(s, (), mapping))
printing
FOO {bar}
Of course this basic implementation only works correctly for basic cases.
...
Can I call a base class's virtual function if I'm overriding it?
Say I have classes Foo and Bar set up like this:
7 Answers
7
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