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Advantages of stateless programming?
...separates F# from ocaml, and possibly other functional languages. It's the pipe operator, it lets you "pipe" the output of one expression into the input of another expression. It makes the code follow how I think more. Like in the code snippet above, that's saying, "take the factors sequence, filter...
opengl: glFlush() vs. glFinish()
...ly dates back to a client server model. You send all gl commands through a pipe to a gl server. That pipe might buffer. Just like any file or network i/o might buffer. glFlush only says "send the buffer now, even if it is not full yet!". On a local system this is almost never needed because a local ...
Apache两种工作模式区别及配置切换 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...限制不能大于256。如果把这个值设为大于256，那么Apache将无法起动。事实上，256对于负载稍重的站点也是不够的。在Apache 1.3中，这是个硬限制。如果要加大这个值，必须在“configure”前手工修改的源代码树下的src/include/httpd.h中...
Regex lookahead for 'not followed by' in grep
...an construct a regex for the complement of what you want to match and then pipe it through 2 greps.
For the regex in question you might do something like
grep 'Ui\.' * | grep -v 'Ui\.L'
share
|
i...
Android代码优化小技巧 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...。这是一个好的习惯，因为你可以从方法声明中得知调用无法改变这个对象的状态。
常量声明为Static Final
先看下面这种声明的方式
static int intVal = 42;
static String strVal = "Hello, world!";
编译器会在类首次被使用到的时候，使用...
FAT32文件系统格式详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...，容量介于1GB到2GB时，一簇对应32个扇区，超出2GB的部分无法使用。显然，对于容量大于512MB的逻辑盘，采用FAT32的簇比采用FAT16的簇小很多，大大减少了空间的浪费。 但是，对于容量小于512MB的盘，采用FAT32虽然一簇8个扇区...
Http长连接200万尝试及调优 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...0万，好，问题来了。
当我设置nofile为200万时，系统直接无法登陆了。尝试几次，发现最大只能设置到100万。在查过源码后，才知道，原来在2.6.25内核之前有个宏定义，定义了这个值的最大值，为1024*1024，正好是100万，而在2.6.25...
How to capture stdout output from a Python function call?
...
Here is an async solution using file pipes.
import threading
import sys
import os
class Capturing():
def __init__(self):
self._stdout = None
self._stderr = None
self._r = None
self._w = None
self._thread = None
...
In SQL Server, when should you use GO and when should you use semi-colon ;?
...nation string. For example, you might specify that statements end with two pipe characters ||. You could then issue CREATE PROCEDURE ... much SQL ending in ; ... || and the double pipe ends the CREATE PROCEDURE statement. So my question is whether this is analgous to the MS GO statement? Secondly, c...
Confused about stdin, stdout and stderr?
...nnections between these handles and specific files and/or devices (or even pipelines to other processes) before your process starts (some of the manipulations possible are rather clever).
An example being:
my_prog <inputfile 2>errorfile | grep XYZ
which will:
create a process for my_prog...