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Usages of Null / Nothing / Unit in Scala
...tom type is tied to its ability to express variance in type parameters."). From the article you linked to:
One other use of Nothing is as a return type for methods that never
return. It makes sense if you think about it. If a method’s return
type is Nothing, and there exists absolutely no ...
Beyond Stack Sampling: C++ Profilers
...ng data. To get good output I need configure it to load the debug symbols from my 3rd party and system libraries. Be sure to do the same, otherwise you'll see that CRT is taking 20% of your application's time when what's really going on is malloc is trashing the heap and eating up 15%.
...
How to extract custom header value in Web API message handler?
...cally supplies a default guid as a string (as it would have been retrieved from Header) and the Guid.Parse third parameter will translate the found or default string value into a GUID.
– Mikee
Feb 6 '15 at 14:23
...
Add Variables to Tuple
..., 2, 3, 4, 5, 6)
c = b[1:] # (2, 3, 4, 5, 6)
And, of course, build them from existing values:
name = "Joe"
age = 40
location = "New York"
joe = (name, age, location)
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Semicolon before self-invoking function? [duplicate]
...tion : f()
Putting a semicolon before the function prevents the function from becoming an argument to whatever precedes it when the parentheses become confused with function application.
Consider
var x = 42
(function () { ... })()
is the same as
var x = 42(function () { ... })()
but
var x...
Difference between two lists
...d duplicates to be preserved, it would probably be easiest to create a set from list2 and use something like:
var list3 = list1.Where(x => !set2.Contains(x)).ToList();
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Meaning of $? (dollar question mark) in shell scripts
...returns a status of 1:
true
echo $? # echoes 0
false
echo $? # echoes 1
From the manual: (acessible by calling man bash in your shell)
$? Expands to the exit status of the most recently executed foreground pipeline.
By convention an exit status of 0 means success, and non...
How do I catch a PHP fatal (`E_ERROR`) error?
...answer. I don't know why people are getting hung up on "you cannot recover from fatal errors"--the question didn't say anything about recovering.
– David Harkness
Nov 1 '11 at 21:53
...
Why should I use version control? [closed]
...
Even if you work alone you can benefit from source control. Among others, for these reasons:
You don't lose anything. I never again commented out code. I simply delete it. It doesn't clutter my screen, and it isn't lost. I can recover it by checking out an old c...
Flatten an irregular list of lists
... can use a tuple of str and bytes to get the same effect there.
The yield from operator returns an item from a generator one at a time. This syntax for delegating to a subgenerator was added in 3.3
def flatten(l):
for el in l:
if isinstance(el, collections.Iterable) and not isinstance(...