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How to use the PI constant in C++
...383279502884 (roughly speaking). I wouldn't bet on it. Be normal and use a raw literal to define the constant. Why lose precision when you don't need to?
– Thomas Eding
Oct 23 '12 at 23:49
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How to make Scroll From Source feature always enabled?
How to enable "Scroll from source" in IntelliJ IDEA so it is always on, meaning if you open any file it is automatically shown in Project view, likewise it is made in Eclipse?
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Best practices/performance: mixing StringBuilder.append with String.concat
...r char[].
That being said you should use append() all the time and append raw strings (your first code snippet is correct).
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git pull fails “unable to resolve reference” “unable to update local ref”
...s' question, it lacks some explaining words and/or links to documentation. Raw code snippets are not very helpful without some phrases around them. You may also find how to write a good answer very helpful. Please edit your answer.
– Roy Scheffers
Nov 23 '18 at...
How do I execute a program from Python? os.system fails due to spaces in path
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It is much simpler to use raw string in windows: r"C:\Temp\a b c\Notepad.exe"
– PierreBdR
Oct 15 '08 at 9:11
1
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Monad in plain English? (For the OOP programmer with no FP background)
... result through the nullable constructor. Now suppose you have this higher-order method:
static Nullable<T> Bind<T>(Nullable<T> amplified, Func<T, Nullable<T>> func)
{
if (amplified == null)
return null;
else
return func(amplified.Value);
}
S...
What is meant by Scala's path-dependent types?
I've heard that Scala has path-dependent types. It's something to do with inner-classes but what does this actually mean and why do I care?
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Differences between socket.io and websockets
...n disable Ajax long-polling and directly connect via WebSocket just like a raw WebSocket connection. In this way, you get everything except the 180kb library as equals. Using WebSocket directly is painful unless you just need the bare minimum. Dropping rooms and access to the community IP is daun...
Xcode debugging - displaying images
...l tools.
What i'm doing to test images while debugging is to convert that raw data into an image-file format, like .png, and then saving it somewhere, and then i'm opening the image with any image viewing tool.
I have a piece of code for that purpose, which look basically like that:
NSData *image...
Rails 3: Get Random Record
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Thing.first(:order => "RANDOM()") # For MySQL :order => "RAND()", - thanx, @DanSingerman
# Rails 3
Thing.order("RANDOM()").first
or
Thing.first(:offset => rand(Thing.count))
# Rails 3
Thing.offset(rand(Thing.count)).first
Ac...