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What is a callback function?
... completes
A nice way of imagining how a callback function works is that it is a function that is "called at the back" of the function it is passed into.
Maybe a better name would be a "call after" function.
This construct is very useful for asynchronous behaviour where we want an activity to t...
Why is using 'eval' a bad practice?
...e. Just to name a few reasons:
There is almost always a better way to do it
Very dangerous and insecure
Makes debugging difficult
Slow
In your case you can use setattr instead:
class Song:
"""The class to store the details of each song"""
attsToStore=('Name', 'Artist', 'Album', 'Genre',...
What is the maximum value for an int32?
...
It's 2,147,483,647. Easiest way to memorize it is via a tattoo.
share
edited Feb 21 '18 at 1:13
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程序员正能量：从事IT的六大好处 - 杂谈 - 清泛网 - 专注C/C++及内核技术
程序员正能量：从事IT的六大好处程序员的同志们，来点正能量！本文是一位程序员总结的干IT的六点好处。看看在云南新华电脑学院学IT的这位程序员同行总结的六点干IT的好处，真是满满的正能量啊！程序员的同志们，来点正...
What is Node.js? [closed]
I don't fully get what Node.js is all about. Maybe it's because I am mainly a web based business application developer. What is it and what is the use of it?
...
How can I develop for iPhone using a Windows development machine?
Is there any way to tinker with the iPhone SDK on a Windows machine? Are there plans for an iPhone SDK version for Windows?
...
Is there a use-case for singletons with database access in PHP?
...red over that one for a while when I first started my career. Implemented it different ways and came up with two reasons to choose not to use static classes, but they are pretty big ones.
One is that you will find that very often something that you are absolutely sure that you'll never have more t...
What are the differences between Generics in C# and Java… and Templates in C++? [closed]
...ust putting List<Person> into the .NET dll file, but at runtime the JIT compiler goes and builds a new set of code, as if you had written a special list class just for containing people - something like ListOfPerson.
The benefit of this is that it makes it really fast. There's no casting or a...
Why is it a bad practice to return generated HTML instead of JSON? Or is it?
It is quite easy to load HTML content from your custom URLs/Web services using JQuery or any other similar framework. I've used this approach many times and till now and found the performance satisfactory.
...
Are braces necessary in one-line statements in JavaScript?
...nt you will need them.
This is perfectly valid
if (cond)
alert("Condition met!")
else
alert("Condition not met!")
However it is highly recommended that you always use braces because if you (or someone else) ever expands the statement it will be required.
This same practice follows in a...