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程序员羊皮卷下载版.pdf - 文档下载 - 清泛网 - 专注C/C++及内核技术
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WinXP,Win7,Win8,Win101.3M
Need a good hex editor for Linux [closed]
... every platform that mono and Gtk# run.
Bless currently provides the following features:
Efficient editing of large data files and block devices.
Multilevel undo - redo operations.
Customizable data views.
Fast data rendering on screen.
Multiple tabs.
Fast find and replace operations.
A data conv...
Why would introducing useless MOV instructions speed up a tight loop in x86_64 assembly?
...works well unless two important uncorrelated branches share the same lower bits. In that case, you end-up with aliasing which causes many mispredicted branches (which stalls the instruction pipeline and slowing your program).
If you want to understand how branch mispredictions affect performance, ...
Creating a simple XML file using python
...performance, the benchmarks on the LXML site indicate that:
LXML clearly wins for serializing (generating) XML
As a side-effect of implementing proper parent traversal, LXML is a bit slower than cElementTree for parsing.
...
Why do people say there is modulo bias when using a random number generator?
...
I may be nitpicking, but if the goal is to reduce wasted bits we could improve this slightly for the edge condition where RAND_MAX (RM) is only 1 less than being equally divisible by N. In this scenario, no bits need to be wasted by doing X >= (RM - RM % N)) which is of little v...
Exotic architectures the standards committees care about
...
@ybungalobill: On old Win16 compilers, regular pointers were near pointers and contained just a 16-bit offset, so sizeof(int*) == 2, but far pointers also had a 16-bit selector, so sizeof(void*) == 4.
– Adam Rosenfield
...
StringIO in Python3
...O should be applied instead. Tested myself on python 3.5 @ eclipse pyDev + win7 x64. Please let me know if I were wrong thanks.
– Bill Huang
Mar 5 '16 at 17:16
...
Hadoop “Unable to load native-hadoop library for your platform” warning
...
I assume you're running Hadoop on 64bit CentOS. The reason you saw that warning is the native Hadoop library $HADOOP_HOME/lib/native/libhadoop.so.1.0.0 was actually compiled on 32 bit.
Anyway, it's just a warning, and won't impact Hadoop's functionalities.
H...
Hash String via SHA-256 in Java
... this version has a bug (at least as of today and with java8@win7). try to hash '1234'. the result must start with '03ac67...' but it actually starts with '3ac67...'
– Chris
Sep 4 '14 at 9:31
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ASP.NET Web API - PUT & DELETE Verbs Not Allowed - IIS 8
...lt;handlers>
<remove name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" />
<remove name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" />
<remove name="ExtensionlessUrlHandler-Integrated-4.0" />
<add name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" path="*." verb...