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'size_t' vs 'container::size_type'
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The standard containers define size_type as a typedef to Allocator::size_type (Allocator is a template parameter), which for std::allocator<T>::size_type is typically defined to be size_t (or a compatible type). So for the standard case, they are the same.
However, if you us...
Why compile Python code?
...ou invoke with python main.py is recompiled every time you run the script. All imported scripts will be compiled and stored on the disk.
Important addition by Ben Blank:
It's worth noting that while running a
compiled script has a faster startup
time (as it doesn't need to be
compiled), i...
How to trigger a file download when clicking an HTML button or JavaScript
...Edge) and it is not supported in Safari. In 2012 when the answer was originally posted it wasn't supported in any major browser.
– Cfreak
Jul 7 '16 at 3:40
2
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Synchronization vs Lock
java.util.concurrent API provides a class called as Lock , which would basically serialize the control in order to access the critical resource. It gives method such as park() and unpark() .
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DynamoDB vs MongoDB NoSQL [closed]
...roughput, you just click a button. You can write scripts to scale automatically. When it's time to upgrade Dynamo, it's done for you. That is all a lot of precious stress and time not spent. If you don't have dedicated ops people, Dynamo is excellent.
So we are now going on Dynamo by default. Mongo...
How to use base class's constructors and assignment operator in C++?
...
You can explicitly call constructors and assignment operators:
class Base {
//...
public:
Base(const Base&) { /*...*/ }
Base& operator=(const Base&) { /*...*/ }
};
class Derived : public Base
{
int additional_;
public:
...
Pointer vs. Reference
...meter then you must either check explicitly that it is not NULL, or search all usages of the function to be sure that it is never NULL. This effort is not required for references.
– Richard Corden
Sep 22 '08 at 11:10
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How do you configure Django for simple development and deployment?
...leased which is probably a better option for most people than doing it manually.
If you would prefer to do things manually, my earlier answer still applies:
I have multiple settings files.
settings_local.py - host-specific configuration, such as database name, file paths, etc.
settings_developme...
Objective-C declared @property attributes (nonatomic, copy, strong, weak)
... retaining the copy.
Assign
Assign is somewhat the opposite to copy. When calling the getter of an assign property, it returns a reference to the actual data. Typically you use this attribute when you have a property of primitive type (float, int, BOOL...)
Retain
retain is required when the attribut...
What does Google Closure Library offer over jQuery? [closed]
...re is not only another JS library, but it is also a set of tools that will allow you to optimize your JS code. Working with jQuery gives you good tools and a lightweight library, but it does not minify your own code. The Closure compiler will. The closure inspector may also be useful, as sometimes m...