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Using emit vs calling a signal as if it's a regular function in Qt
... was implemented by the fire department. May be imprecise, but you get the idea. Let's look at the example of OP.
Some backend object knows how much progress has been made. So it could simply emit progressNotification(...) signal. It is up to the class that displays the actual progress bar, to pick...
Can I use view pager with views (not with fragments)
...then try to swipe to the third page, the third page shows up as blank. Any idea what gives?
– Nathan Walters
May 31 '14 at 19:23
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Does C++ support 'finally' blocks? (And what's this 'RAII' I keep hearing about?)
...n Is Initialization" -- a poor name† for a really useful concept.
The idea is that an object's destructor is responsible for freeing resources. When the object has automatic storage duration, the object's destructor will be called when the block in which it was created exits -- even when that ...
Bash tool to get nth line from a file
...u would expect to be heavily optimized in a modern Unix system.
To get an idea about the performance differences, these are the number that I get for a huge file (9.3G):
tail -n+N | head -1: 3.7 sec
head -N | tail -1: 4.6 sec
sed Nq;d: 18.8 sec
Results may differ, but the performance head | tai...
How can bcrypt have built-in salts?
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This is how I understand it: The idea is that every password has an unique salt. The salt in incorporated in the password hash so a hacker would have to create a rainbow table for every password. This would take an enormous amount of time for a moderate data...
What is an EJB, and what does it do?
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The basic principles are the same. Spring took ideas from EJBs and vice-versa. But the API, implementation, way to deploy, and some features are different.
– JB Nizet
Feb 22 '15 at 11:32
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What Makes a Good Unit Test? [closed]
...gn pattern." I also agree one assertion per unit test is generally a good idea, but I don't always insist on it. I like the more general "test one thing per unit test". Though that usually does translate to one assert per unit test.
– Jon Turner
Aug 24 '11 a...
Are getters and setters poor design? Contradictory advice seen [duplicate]
...rnal state in an intimate manner and hence being too closely coupled.
The idea is to make methods that directly do things you want to do. An example would be how to set enemies' "alive" status. You might be tempted to have a setAlive(boolean alive) method. Instead you should have:
private boolean ...
Checkout subdirectories in Git?
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+1 for the idea with a symbolic link on the checked out directory. However, a sparse checkout and a symbolic link are not mutually exclusive: you don't need a full fledged clone.
– apitsch
Feb 7 at...
What does “S3 methods” mean in R?
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I am pretty sure that the idea of member functions and methods belonging to objects does not make that much sense in R. Methods do not belong to objects (also functions are objects too) but belong to the function.
– petermeissner...