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Is it intended by the C++ standards committee that in C++11 unordered_map destroys what it inserts?
...ehaviour, you observe, which always moves, is a bug in libstdc++, which is now fixed according to a comment on the question. For those curious, I took a look at the g++-4.8 headers.
bits/stl_map.h, lines 598-603
template<typename _Pair, typename = typename
std::enable_if<std::is...
Illegal pattern character 'T' when parsing a date string to java.util.Date
...
Update for Java 8 and higher
You can now simply do Instant.parse("2015-04-28T14:23:38.521Z") and get the correct thing now, especially since you should be using Instant instead of the broken java.util.Date with the most recent versions of Java.
You should be u...
How do you calculate program run time in python? [duplicate]
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I don't know if this is a faster alternative, but I have another solution -
from datetime import datetime
start=datetime.now()
#Statements
print datetime.now()-start
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Should I implement __ne__ in terms of __eq__ in Python?
...e other side, not self == other is (assuming the operand's __eq__ doesn't know how to compare the other operand) implicitly delegating to __eq__ from the other side, then inverting it. For weird types, e.g. the SQLAlchemy ORM's fields, this causes problems.
– ShadowRanger
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How to do date/time comparison
... time.LoadLocation("UTC")
// setup a start and end time
createdAt := time.Now().In(loc).Add(1 * time.Hour)
expiresAt := time.Now().In(loc).Add(4 * time.Hour)
// get the diff
diff := expiresAt.Sub(createdAt)
fmt.Printf("Lifespan is %+v", diff)
The program outputs:
Lifespan is 3h0m0s
http://pla...
Using HTML in Express instead of Jade
...other articles I have seen that people recommended app.register() which is now deprecated in the latest version.
13 Answers...
How to automatically generate N “distinct” colors?
...dividing the RGB cube into a lattice and then drawing points. Does anyone know any other methods? I'm ruling out defining a list and then just cycling through it. I should also say I don't generally care if they clash or don't look nice, they just have to be visually distinct.
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How to printf uint64_t? Fails with: “spurious trailing ‘%’ in format”
... requested.
#define __STDC_FORMAT_MACROS
#include <inttypes.h>
... now PRIu64 will work
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How can I use threading in Python?
...nction are provided by two libraries:multiprocessing, and also its little known, but equally fantastic step child:multiprocessing.dummy.
multiprocessing.dummy is exactly the same as multiprocessing module, but uses threads instead (an important distinction - use multiple processes for CPU-intensive...
What is __stdcall?
... calling you (as is the case here with WinMain). If the compiler doesn't know the correct calling convention then you will likely get very strange crashes as the stack will not be managed correctly.
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