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@Nullable annotation usage
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84
This annotation is commonly used to eliminate NullPointerExceptions. @Nullable says that this p...
What is token-based authentication?
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96
A token is a piece of data which only Server X could possibly have created, and which contains ...
Deleting all pending tasks in celery / rabbitmq
... 1
celeryev.c27b070d-b07e-4e37-9dca-dbb45d03fd54 0 1
celeryev.c66a9bed-84bd-40b0-8fe7-4e4d0c002866 0 1
celeryev.b490f71a-be1a-4cd8-ae17-06a713cc2a99 0 1
celeryev.9d023165-ab4a-42cb-86f8-90294b80bd1e 0 1
The first column is the queue name, the second is the number of messages waitin...
What should my Objective-C singleton look like? [closed]
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Ben HoffsteinBen Hoffstein
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Pandas read_csv low_memory and dtype options
... dtypes exists?
We have access to numpy dtypes: float, int, bool, timedelta64[ns] and datetime64[ns]. Note that the numpy date/time dtypes are not time zone aware.
Pandas extends this set of dtypes with its own:
'datetime64[ns, ]' Which is a time zone aware timestamp.
'category' which is essentially...
What does the brk() system call do?
... not sure where the number 512GB in this diagram comes from. It implies a 64-bit virtual address space, which is inconsistent with the very simple memory map you have there. A real 64-bit address space looks more like this:
Legend: t: text, d: data, b: BSS
This is not remotely ...
difference between #if defined(WIN32) and #ifdef(WIN32)
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Bo Persson
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answered Oct 20 '12 at 13:00
nehaneha
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Header files for x86 SIMD intrinsics
... compiler and target architecture.
For Microsoft C++ (targeting x86, x86-64 or ARM) and Intel C/C++ Compiler for Windows use intrin.h
For gcc/clang/icc targeting x86/x86-64 use x86intrin.h
For gcc/clang/armcc targeting ARM with NEON use arm_neon.h
For gcc/clang/armcc targeting ARM with WMMX use mm...
Xcode 4.2 debug doesn't symbolicate stack call
...g or the like, gdb backtrace will work fine from there:
(gdb) bt
#0 0x01f84cf0 in objc_exception_throw ()
#1 0x019efced in -[NSObject doesNotRecognizeSelector:] ()
(etc)
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std::enable_if to conditionally compile a member function
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96
I made this short example which also works.
#include <iostream>
#include <type_traits...