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Should operator
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The problem here is in your interpretation of the article you link.
Equality
This article is about somebody that is having problems correctly defining the bool relationship operators.
The operator:
Equality == and !=
Relationship < > <= >=
These operators should return a bool as ...
Why do we need a pure virtual destructor in C++?
...the real reason that pure virtual destructors are allowed is that to prohibit them would mean adding another rule to the language and there's no need for this rule since no ill-effects can come from allowing a pure virtual destructor.
Nope, plain old virtual is enough.
If you create an object wit...
How to create a file with a given size in Linux?
...purposes I have to generate a file of a certain size (to test an upload limit).
13 Answers
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What's the u prefix in a Python string?
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You're right, see 3.1.3. Unicode Strings.
It's been the syntax since Python 2.0.
Python 3 made them redundant, as the default string type is Unicode. Versions 3.0 through 3.2 removed them, but they were re-added in 3.3+ for compatibility with Python 2 to aide the 2...
How to modify a global variable within a function in bash?
I'm working with this:
8 Answers
8
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Java 8 stream's .min() and .max(): why does this compile?
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Let me explain what is happening here, because it isn't obvious!
First, Stream.max() accepts an instance of Comparator so that items in the stream can be compared against each other to find the minimum or maximum, in some optimal order that you don't need to worry too mu...
When to use MongoDB or other document oriented database systems? [closed]
...latform for video- and audio-clips, photos and vector-grafics. We started with MySQL as the database backend and recently included MongoDB for storing all meta-information of the files, because MongoDB better fits the requirements. For example: photos may have Exif information, videos may have a...
What strategies and tools are useful for finding memory leaks in .NET?
... C++ for 10 years. I encountered memory problems, but they could be fixed with a reasonable amount of effort.
15 Answers
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What is the point of noreturn?
...to the calling function after the function finishes (e.g. functions that exit the application, loop forever or throw exceptions as in your example).
This can be used by compilers to make some optimizations and generate better warnings. For example if f has the noreturn attribute, the compiler could...
Use email address as primary key?
... if you simply retrieve a user from the database using the e-mail address. It does matter if you have complex queries with multiple joins.
If you store information about users in multiple tables, the foreign keys to the users table will be the e-mail address. That means that you store the e-mail ad...