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Objective-C ARC: strong vs retain and weak vs assign
...mple in the section on property attributes).
// The following declaration is a synonym for: @property(retain) MyClass *myObject;
@property(strong) MyClass *myObject;
So strong is the same as retain in a property declaration.
For ARC projects I would use strong instead of retain, I would use ass...
Relative imports in Python 2.7
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Script vs. Module
Here's an explanation. The short version is that there is a big difference between directly running a Python file, and importing that file from somewhere else. Just knowing what directory a file is in does not determine what package Python thinks it is in. That de...
Difference between 3NF and BCNF in simple terms (must be able to explain to an 8-year old)
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Wait a second, mozzarella can't be both a cheese and a meat! And sausage isn't a cheese!
We need to prevent these sorts of mistakes, to make mozzarella always be cheese. We should use a separate table for this, so we write down that fact in only one place.
Pizza Topping
-------- ----------
1...
What's the difference between compiled and interpreted language?
After reading some material on this subject I'm still not sure what the difference between a compiled language and an interpreted language is. I was told this is one of the differences between Java and JavaScript. Would someone please help me in understanding it?
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What is HEAD in Git?
... "current branch". When you switch branches with git checkout, the HEAD revision changes to point to the tip of the new branch.
You can see what HEAD points to by doing:
cat .git/HEAD
In my case, the output is:
$ cat .git/HEAD
ref: refs/heads/master
It is possible for HEAD to refer to a speci...
What is the difference between syntax and semantics in programming languages?
What is the difference between syntax and semantics in programming languages (like C, C++)?
10 Answers
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Software Design vs. Software Architecture [closed]
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You're right yes. The architecture of a system is its 'skeleton'. It's the highest level of abstraction of a system. What kind of data storage is present, how do modules interact with each other, what recovery systems are in place. Just like design patterns, there are arc...
Core pool size vs maximum pool size in ThreadPoolExecutor
What exactly is the difference between core pool size and maximum pool size when we talk in terms of ThreadPoolExecutor ?
Can it be explained with the help of an example?
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Why does sizeof(x++) not increment x?
Here is the code compiled in dev c++ windows:
9 Answers
9
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How to “test” NoneType in python?
... sometimes returns a NoneType value. So how can I question a variable that is a NoneType? I need to use if method, for example
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