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Difference between Math.Floor() and Math.Truncate()
..._□)
To the left... Math.floor
Take it back now y'all... --
Two hops this time... -=2
Everybody clap your hands ✋✋
How low can you go? Can you go down low? All the way to the floor?
if (this == "wrong")
return "i don't wanna be right";
Math.truncate(x) is also the same as int(x).
by removi...
Read whole ASCII file into C++ std::string [duplicate]
... voting this up, here is a quick question, say I have a 1MB file, how many times will the "end" passed to the std::string constructor or assign method be invoked? People think these kind of solutions are elegant when in fact they are excellent examples of HOW NOT TO DO IT.
– Ma...
Remove last character from string. Swift language
...
let name: String = "Dolphin"
let stringLength = count(name) // Since swift1.2 `countElements` became `count`
let substringIndex = stringLength - 1
name.substringToIndex(advance(name.startIndex, substringIndex)) // "Dolphi"
Alternatively (for a more practical, but less educational example) you can...
What is the difference in maven between dependency and plugin tags in pom xml?
...talking about the life cycle of maven.. but why goal again? any hints? Sometimes i see people put life cycle keyword at goal... ??? (?.?)
– taymedee
Jan 4 '15 at 13:52
...
How to measure code coverage in Golang?
... verify ATM, I'm not at release as I have a CL pending, but the cov binary time stamp I see in ~/go/pkg/tool/linux_amd64 matches my last Go build of yesterday.
– zzzz
May 9 '12 at 13:47
...
Find the nth occurrence of substring in a string
...split(). So we actually have to copy the whole file into memory:
In [4]: %time s = mm[:]
CPU times: user 813 ms, sys: 3.25 s, total: 4.06 s
Wall time: 17.7 s
Ouch! Fortunately s still fits in the 4 GB of memory of my Macbook Air, so let's benchmark findnth():
In [5]: %timeit find_nth.findnth(s, ...
How can I profile Python code line-by-line?
...d for. From the link:
File: pystone.py
Function: Proc2 at line 149
Total time: 0.606656 s
Line # Hits Time Per Hit % Time Line Contents
==============================================================
149 @profile
150 ...
What is more efficient? Using pow to square or just multiply it with itself?
...:
#include <cstdlib>
#include <cmath>
#include <boost/date_time/posix_time/posix_time.hpp>
inline boost::posix_time::ptime now()
{
return boost::posix_time::microsec_clock::local_time();
}
#define TEST(num, expression) \
double test##num(double b, long loops) \
{ \
doubl...
How do I print the type or class of a variable in Swift?
...
Edit: A new toString function has been introduced in Swift 1.2 (Xcode 6.3).
You can now print the demangled type of any type using .self and any instance using .dynamicType:
struct Box<T> {}
toString("foo".dynamicType) // Swift.String
toString([1, 23, 456].dynamic...
how to check the dtype of a column in python pandas
...ecause in fact this approach is discouraged in python as mentioned several times here.
But if one still want to use it - should be aware of some pandas-specific dtypes like pd.CategoricalDType, pd.PeriodDtype, or pd.IntervalDtype. Here one have to use extra type( ) in order to recognize dtype correc...