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Ruby: kind_of? vs. instance_of? vs. is_a?
...at's an interesting reason. can you break this, thouugh? like can you override kind_of? but not is_a??
– Claudiu
Oct 8 '10 at 19:38
3
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Purpose of #!/usr/bin/python3
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@winklerrr Yes, it's more widely used.
– MerreM
Nov 25 '19 at 14:37
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How does generic lambda work in C++14?
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Unfortunately, they are not part of C++11 (http://ideone.com/NsqYuq):
auto glambda = [](auto a) { return a; };
int main() {}
With g++ 4.7:
prog.cpp:1:24: error: parameter declared ‘auto’
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However, the way it might be implemented in C++14 as per the Portland p...
Call a function with argument list in python
I'm trying to call a function inside another function in python, but can't find the right syntax. What I want to do is something like this:
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python: Change the scripts working directory to the script's own directory
...Do not mingle code and data.
Data is precious. Code comes and goes.
Provide the working directory as a command-line argument value. You can provide a default as an environment variable. Don't deduce it (or guess at it)
Make it a required argument value and do this.
import sys
import os
workin...
Remove .php extension with .htaccess
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Gumbo's answer in the Stack Overflow question How to hide the .html extension with Apache mod_rewrite should work fine.
Re 1) Change the .html to .php
Re a.) Yup, that's possible, just add #tab to the URL.
Re b.) That's possible using QSA (Query String Append), see below.
Th...
Is it possible to cast a Stream in Java 8?
...> c instanceof Client)
.map(c -> (Client) c)
.map(Client::getID)
.forEach(System.out::println);
or, as suggested in the comments, you could use the cast method - the former may be easier to read though:
Stream.of(objects)
.filter(Client.class::isInstance)
.map(Client.cla...
Is there something like Annotation Inheritance in java?
...ted elements. The Spring class is also powerful enough to search through bridged methods, proxies, and other corner-cases, particularly those encountered in Spring.
share
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improve this answer
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Why can't I forward-declare a class in a namespace using double colons?
...he only way to forward-declare a nested class is to put the declaration inside the definition of the enclosing class. And there's indeed no way to forward-declare the nested class before the definition of the enclosing class.
– AnT
Jan 13 '10 at 19:51
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GCD to perform task in main thread
...ble performance impact in most cases: GCD is a lightweight library. That said, I understood the question as: ‘given the code below, do I need to check whether I’m on the main thread?’
– user557219
Dec 18 '11 at 10:17
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