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libunwind链接时报错：undefined reference to `_Ux86_64_init_local\' - ...
libunwind链接时报错：undefined reference to `_Ux86_64_init_local'编译安装libunwind后，代码编译链接时报错：undefined reference to `_Ux86_64_init_local& 39;，链接选项加了 -lunwind，仍然报错。原因：编译出来的libunwind拆分成了很多个 编译安装libunwi...
When should iteritems() be used instead of items()?
...s required for what was dict.items() in Python 2.x.
Python 2.7 also has a bit of a back-port for key handling, in that you have viewkeys, viewitems and viewvalues methods, the most useful being viewkeys which behaves more like a set (which you'd expect from a dict).
Simple example:
common_keys = ...
Convert NSNumber to int in Objective-C
...entially just an alias to some primitive integer type that's known to be 32bit on 32bit machines and 64bit on 64bit devices.
– Max Seelemann
Jan 6 '15 at 10:31
1
...
GCC compile error with >2 GB of code
...arge model" specifically to avoid such size limitations, which includes 64-bit relocation types for the GOT and PLT. (See the table in section 4.4.2, and the instruction sequences in 3.5.5 which show how they are used.)
Since your functions are occupying 2.8 GB, you are out of luck, because gcc do...
Is gcc's __attribute__((packed)) / #pragma pack unsafe?
... also been systems where a misaligned access quietly ignores the low-order bits of the address, causing it to access the wrong chunk of memory.
Consider the following program:
#include <stdio.h>
#include <stddef.h>
int main(void)
{
struct foo {
char c;
int x;
} ...
微软正式推送Win10，不满意或者不习惯可以回滚至旧版 - 资讯 - 清泛网 - 专...
微软正式推送Win10，不满意或者不习惯可以回滚至旧版今天无疑是微软新款操作系统Win10的大日子，被视作继Win7之后又一个能够带微软重回巅峰的系统作品，Win10推送全面开启，Win7、Win8用户从今日零点起就可以免费升级到Win10，...
Path to MSBuild
...ease note that if you want to build a windows phone app, that needs the 32 bits msbuild. Querying the registry gives only the 64 bit msbuild on a 64 bit machine.
– Victor Ionescu
Jul 3 '14 at 11:39
...
How to assign colors to categorical variables in ggplot2 that have stable mapping?
...ionInfo():
R version 3.0.2 (2013-09-25)
Platform: x86_64-pc-linux-gnu (64-bit)
locale:
[1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C
[3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8
[5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8
[7] LC_PAPER=en_US.UTF-8 LC...
Is there any particular difference between intval and casting to int - `(int) X`?
...1.7920589447 ms"
Looks like 7.1 optimized intval, and '1' + 0 is now the winner of this speed contest :) I'd still keep using intval anyway
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When and why will a compiler initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete?
...ed
to this value (at byte level).
// the following magic values are done by the OS, not the C runtime:
0xAB (Allocated Block?) Memory allocated by LocalAlloc().
0xBAADF00D Bad Food Memory allocated by LocalAlloc() with LMEM_FIXED,but
no...