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When should I use nil and NULL in Objective-C?
...epresent an object
– cobbal
Oct 14 '09 at 5:43
41
also, in MacTypes.h there is #define nil NULL
...
Casting vs using the 'as' keyword in the CLR
...
The answer below the line was written in 2008.
C# 7 introduced pattern matching, which has largely replaced the as operator, as you can now write:
if (randomObject is TargetType tt)
{
// Use tt here
}
Note that tt is still in scope after this, but not definit...
Why are there two kinds of functions in Elixir?
...
A function can have multiple clauses too:
x = 1
fun = fn
y when y < 0 -> x - y
y -> x + y
end
fun.(2) #=> 3
fun.(-2) #=> 3
Now, let's try something different. Let's try to define different clauses expecting a different number of arguments:
fn
x, y -> x + y
x -> x
en...
Debugging in Clojure? [closed]
... | (fib 1)
TRACE t4427: | | => 1
TRACE t4428: | | (fib 0)
TRACE t4428: | | => 0
TRACE t4426: | => 1
TRACE t4429: | (fib 1)
TRACE t4429: | => 1
TRACE t4425: => 2
2
In Clojure 1.4, dotrace has moved:
You need the dependency:
[org.clojure/tools.trace...
Standard alternative to GCC's ##__VA_ARGS__ trick?
...
10 Answers
10
Active
...
Actionbar notification count icon (badge) like Google has
...
+100
I am not sure if this is the best solution or not, but it is what I need.
Please tell me if you know what is need to be changed for ...
Does C# have extension properties?
...
403
For the moment it is still not supported out of the box by Roslyn compiler ...
Until now, the ...
Getting DOM elements by classname
... |
edited Sep 8 at 0:32
robin eriksson
5655 bronze badges
answered Jun 16 '11 at 2:07
...
OSX - How to auto Close Terminal window after the “exit” command executed.
...or me
– Frankenmint
Dec 26 '15 at 3:08
Obvious and clean, perfect.
– aydinugur
...
How to display pandas DataFrame of floats using a format string for columns?
... '${:,.2f}'.format
df = pd.DataFrame([123.4567, 234.5678, 345.6789, 456.7890],
index=['foo','bar','baz','quux'],
columns=['cost'])
print(df)
yields
cost
foo $123.46
bar $234.57
baz $345.68
quux $456.79
but this only works if you want every float to...