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Convert a Scala list to a tuple?
...cala> val hlist = "z" :: 6 :: "b" :: true :: HNil
hlist: shapeless.::[String,shapeless.::[Int,shapeless.::[String,shapeless.::[Boolean,shapeless.HNil]]]] = z :: 6 :: b :: true :: HNil
scala> val tup = hlist.tupled
tup: (String, Int, String, Boolean) = (z,6,b,true)
scala> tup
res0: (St...
#pragma pack effect
...ing a DWORD at an address which isn't divisible by 4 requires at least one extra CPU cycle on a 32 bit processor. So, if you have e.g. three char members char a, b, c;, they actually tend to take 6 or 12 bytes of storage.
#pragma allows you to override this to achieve more efficient space usage, a...
std::string to char*
I want to convert a std::string into a char* or char[] data type.
18 Answers
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How to get rid of `deprecated conversion from string constant to ‘char*’` warnings in GCC?
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I believe passing -Wno-write-strings to gcc will suppress this warning.
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“#include” a text file in a C program as a char[]
Is there a way to include an entire text file as a string in a C program at compile-time?
17 Answers
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Take a char input from the Scanner
...seDelimiter("");
After this reader.next() will return a single-character string.
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is vs typeof
... +1: In the past I wondered why the C# compiler didn't compile typeof(string).TypeHandle to the ldtoken CIL instruction, but it looks like the CLR takes care of it in the JIT. It still takes a few extra opcodes but it's a more generalized application of the optimization.
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What's the difference between a word and byte?
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For extra credit, a "nibble" is a common term for half a byte. It arose during the early microcomputer CPU era (e.g., the Intel 8080), and was always understood to be 4 bits, because by then the byte had settled down to 8 bits.
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Convert HashBytes to VarChar
I want to get the MD5 Hash of a string value in SQL Server 2005. I do this with the following command:
7 Answers
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Calling Objective-C method from C++ member function?
... case for xcode project I open xcode project file throught TextEdit, found string which contents interest file, it should be like:
/* OnlineManager.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = OnlineManager.cpp; sourceTree = "<group>"; };
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