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The new syntax “= default” in C++11
... (15.4), ..." It makes no difference in this specific case, but in general foo() = default; has a slight advantage over foo() {}.
– Casey
Dec 30 '13 at 4:01
...
What does the “Just” syntax mean in Haskell?
...ion of a null). Basically, if your function would normally return the type Foo, it instead should return the type Maybe Foo. If you want to indicate that there's no value, return Nothing. If you want to return a value bar, you should instead return Just bar.
So basically, if you can't have Nothing,...
Should I use SVN or Git? [closed]
...ight there in the log.
Creating a repository is a trivial operation:
mkdir foo; cd foo; git init
That's it. Which means I create a Git repository for everything these days. I tend to use one repository per class. Most of those repositories are under 1 MB in disk as they only store lecture notes, hom...
How to use Regular Expressions (Regex) in Microsoft Excel both in-cell and loops
...ested: stackoverflow.com/questions/30218413/…
– Armfoot
May 13 '15 at 14:58
11
Late binding lin...
Why are there two kinds of functions in Elixir?
...ctions.
Everything in elixir is an expression. So
MyModule.my_function(foo)
is not a function but the expression returned by executing the code in my_function. There is actually only one way to get a "Function" that you can pass around as an argument and that is to use the anonymous function ...
Should I implement __ne__ in terms of __eq__ in Python?
...ich checks for identity (see do_richcompare and our evidence below)
class Foo:
def __ne__(self, other):
return NotImplemented
__eq__ = __ne__
f = Foo()
f2 = Foo()
And the comparisons:
>>> f == f
True
>>> f != f
False
>>> f2 == f
False
>>> f2 !...
How can I profile C++ code running on Linux?
...ed sampling for, uh, time. It then apportions times sampled in a function foo() back to the callers of foo(), in proprtion to the numberr of calls. So it doesn't distinguish between calls of different costs.
– Krazy Glew
Apr 28 '12 at 5:45
...
What are the use cases for selecting CHAR over VARCHAR in SQL?
.... So (assuming you are using a one-byte character set) storing the word "FooBar"
CHAR(6) = 6 bytes (no overhead)
VARCHAR(100) = 8 bytes (2 bytes of overhead)
CHAR(10) = 10 bytes (4 bytes of waste)
The bottom line is CHAR can be faster and more space-efficient for data of relatively the same leng...
When should static_cast, dynamic_cast, const_cast and reinterpret_cast be used?
...constness.
Another example is when you want to implement T& SomeClass::foo() as well as const T& SomeClass::foo() const. To avoid code duplication, you can apply const_cast to return value of one function from another.
reinterpret_cast
This basically says that take these bytes at this me...
REST, HTTP DELETE and parameters
...urn a 303 See Other. And just to counter the obvious objection to this, /foo.xml and /foo.json are two different resources.
– Darrel Miller
Mar 30 '10 at 23:41
...