大约有 16,199 项符合查询结果(耗时:0.0143秒) [XML]

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Functional style of Java 8's Optional.ifPresent and if-not-Present?

In Java 8, I want to do something to an Optional object if it is present, and do another thing if it is not present. 12 A...
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通过 ulimit 改善系统性能 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...统的内键功能,它具有一套参数集,用于为由它生成的 shell 进程及其子进程的资源使用设置限制。本文将在后面的章节中详细说明 ulimit 的功能,使用以及它的影响,并以具体的例子来详细地阐述它在限制资源使用方面的影响。...
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PHP prepend leading zero before single digit number, on-the-fly [duplicate]

PHP - Is there a quick, on-the-fly method to test for a single character string, then prepend a leading zero? 3 Answers ...
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Remove duplicate entries using a Bash script [duplicate]

I want to remove duplicate entries from a text file, e.g: 4 Answers 4 ...
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Loop through list with both content and index [duplicate]

It is very common for me to loop through a python list to get both the contents and their indexes. What I usually do is the following: ...
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c++ 写日志通用类,可设置日志级别 - C/C++ - 清泛网 - 专注C/C++及内核技术

...+ 写日志通用类,可设置日志级别c++ 写日志通用类(windows & linux 通用),可设置日志级别。代码经过较长时间的测试,可用性高。Logger.h #ifndef __LOGGER_H_ #define __LOGGER_H_ #include <iostream> #include <atlstr.h> #pragma warning(disable:4996) ...
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字符串指针变量与字符数组的区别 - C/C++ - 清泛网 - 专注C/C++及内核技术

...义字符型指针变量与字符数组的语句如下:  char *pc ,str[100];  则系统...使用字符串指针变量与字符数组的区别 (1)分配内存   设有定义字符型指针变量与字符数组的语句如下:   char *pc ,str[100];   则系统将为字...
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正则表达式中 /i,/g,/m,/s,/e,/x 的含义 - 更多技术 - 清泛网 - 专注C/C++及内核技术

正则表达式中 /i,/g,/m,/s,/e,/x 的含义正则表达式中 i, g, m, s, e, x的区别和含义 i (忽略大小写) g (全文查找出现的所有匹配字符) m (多行查找) gi(全文查找、忽略大小写) ig...正则表达式中 /i,/g,/m,/x,/e,/x 的含义: /i (忽略大小写) /g (...
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Linux bpftrace学习笔记(持续更新) - 操作系统(内核) - 清泛网 - 专注IT技能提升

Linux bpftrace学习笔记(持续更新)Linux-bpftrace-notes图:BPF性能工具及其可见性bpftrace安装请参考:bpftrace-install。1、查看程序在打开哪些文件: bpftrace -e & 39;tracepoint:syscalls:sys_enter_open { printf("%s %s n 图:BPF性能工具及其可见性 ...
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Linux bpftrace学习笔记(持续更新) - 操作系统(内核) - 清泛网 - 专注IT技能提升

Linux bpftrace学习笔记(持续更新)Linux-bpftrace-notes图:BPF性能工具及其可见性bpftrace安装请参考:bpftrace-install。1、查看程序在打开哪些文件: bpftrace -e & 39;tracepoint:syscalls:sys_enter_open { printf("%s %s n 图:BPF性能工具及其可见性 ...