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What is the difference between “long”, “long long”, “long int”, and “long long int” in C++?
..., and long was 32; int could either be 16 or 32. Note for some platforms (esp. the 68000) both 16-bit and 32-bit int were quite common, and indeed some compilers had options to support either. Code which needed to be portable was thus expected to use short or long in preference to int.
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Why do people say that Ruby is slow? [closed]
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First of all, slower with respect to what? C? Python? Let's get some numbers at the Computer Language Benchmarks Game:
Ruby 1.9 vs. Python3 within the same order of magnitude
Ruby 1.9 vs. PHP within the same order of magnitude
Ruby 1.9 vs. Java 6 ...
Why is there no GIL in the Java Virtual Machine? Why does Python need one so bad?
...hon (the popular implementation) has always used a GIL for ease of coding (esp. the coding of the garbage collection mechanisms) and of integration of non-thread-safe C-coded libraries (there used to be a ton of those around;-).
The Unladen Swallow project, among other ambitious goals, does plan a ...
List comprehension rebinds names even after scope of comprehension. Is this right?
...on
requires a separate execution frame.
Thus, generator expressions
(especially if they iterate over a
short sequence) were less efficient
than list comprehensions.
However, in Python 3, we decided to
fix the "dirty little secret" of list
comprehensions by using the same
impleme...
ASP.NET MVC View Engine Comparison
...f great value to the ASP.NET MVC community if people add their experience (esp. anyone who contributed to one of these). Anything implementing IViewEngine (e.g. VirtualPathProviderViewEngine) is fair game here. Just alphabetize new View Engines (leaving WebFormViewEngine and Razor at the top), and...
What is the difference between ELF files and bin files?
... extended loader format ELf file ,what is the difference between the two , especially the utility of ELF file.
4 Answers
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What is a Portable Class Library?
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It's used for creating a Class Library that targets multiple platforms (esp Silverlight variants such as WP7 and SL4, but including XNA on Xbox) at one time.
See also this InfoQ summary article
See also this release notice.
For down and dirty details, see Multi-Targeting Guidelines for Tools f...
Should I use SVN or Git? [closed]
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@Oli Would be good to update your answer (esp about Windows git client) based on the comments here and your experience. The current answer seems biased now that 2-3 years have passed since it was written.
– amit
May 16 '11 at 3:...
Why switch is faster than if
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@Eric it is slower for a small number of values esp String or int which are sparse.
– Peter Lawrey
Jan 3 '18 at 3:29
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Which is faster: Stack allocation or Heap allocation
...single instruction on most architectures, in most cases, e.g. on x86:
sub esp, 0x10
(That moves the stack pointer down by 0x10 bytes and thereby "allocates" those bytes for use by a variable.)
Of course, the stack's size is very, very finite, as you will quickly find out if you overuse stack all...