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ActiveRecord: size vs count
In Rails, you can find the number of records using both Model.size and Model.count . If you're dealing with more complex queries is there any advantage to using one method over the other? How are they different?
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Why is Double.MIN_VALUE in not negative
... actually the minimum value that Doubles can take? It is a positive value, and a Double can of course be negative.
6 Answer...
What is the best way to give a C# auto-property an initial value?
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In C# 5 and earlier, to give auto implemented properties an initial value, you have to do it in a constructor.
Since C# 6.0, you can specify initial value in-line. The syntax is:
public int X { get; set; } = x; // C# 6 or higher
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Apache redirect to another port
I've struggled with this for some time and am definitely doing something wrong.
14 Answers
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How can I inspect disappearing element in a browser?
...element that contains the disappearing element. Right click on the element and apply "Break on... > Subtree Modifications." This will throw a debugger pause before the element disappears, which will allow you to interact with the element in a paused state.
Update Oct 22 2019: with the release of...
What is the difference between a static and a non-static initialization code block
...static from the initializer block, it then becomes an instance initializer and so int a is initialized at construction.
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Size of character ('a') in C/C++
What is the size of character in C and C++ ? As far as I know the size of char is 1 byte in both C and C++.
4 Answers
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What's the difference between hard and soft floating point numbers?
... architecture" This can make sense for a library to be machine-independent and bit-exact (soft float) in accuracy-critical parts and fast (hard float) in parts where small deviations don't matter.
– PhilLab
May 29 '17 at 12:18
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How to install plugins to Sublime Text 2 editor?
...ublime Text 2 install directory.
All you need to do is download the plugin and put the plugin folder in the Packages folder.
Or, an easier way would be to install the Package Control Plugin by wbond.
Just go here: https://sublime.wbond.net/installation
and follow the install instructions.
Once y...
Does Java casting introduce overhead? Why?
...t objects of one type to another? Or the compiler just resolves everything and there is no cost at run time?
5 Answers
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