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How to tell if JRE or JDK is installed
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answered Apr 24 '14 at 11:31
Maciej CyganMaciej Cygan
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What is Prism for WPF?
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edited Oct 30 '17 at 12:15
OMGtechy
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LINQ Group By into a Dictionary Object
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362
Dictionary<string, List<CustomObject>> myDictionary = ListOfCustomObjects
.Gro...
Member initialization while using delegated constructor
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edited Aug 30 '12 at 5:34
answered Aug 30 '12 at 4:55
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R object identification
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data(cars)
obj <- lm(dist ~ speed, data=cars)
..etc.
If obj is an S3 or S4 object, you can also try methods or showMethods, showClass, etc. Patrick Burns' R Inferno has a pretty good section on this (sec #7).
EDIT: Dirk and Hadley mention str(obj) in their answers. It really is much bette...
Why am I seeing “TypeError: string indices must be integers”?
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edited Feb 4 '12 at 3:49
Amanda
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answered...
Check for array not empty: any?
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Marcel JackwerthMarcel Jackwerth
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'float' vs. 'double' precision
...ry representation, not a decimal one.
Single precision (float) gives you 23 bits of significand, 8 bits of exponent, and 1 sign bit.
Double precision (double) gives you 52 bits of significand, 11 bits of exponent, and 1 sign bit.
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What does it mean when git says a file “needs update”?
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answered Apr 18 '10 at 3:17
Michael MrozekMichael Mrozek
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64-bit version of Boost for 64-bit windows
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As a longer answer, here are my build notes for having VS .NET 2008 32-bit and 64-bit boost libraries in the same hierarchy (which is I suspect a common use case):
Build the win32 binaries
bjam --toolset=msvc-9.0 --build-type=complete stage
Create the directory lib\win32
Move the contents...