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What does tilde-greater-than (~>) mean in Ruby gem dependencies? [duplicate]
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It means "equal to or greater than in the last digit", so e.g. ~> 2.3 means
"equal to 2.3 or greater than 2.3, but less than 3.0", while ~> 2.3.0 would
mean "equal to 2.3.0 or greater than 2.3.0, but less than 2.4.0".
You can pronounce i...
Unix - copy contents of one directory to another [closed]
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Correct. cp -R will, but that'll recursively copy, so you may or may not want to use that. You could do cp Folder1/.* Folder2/ to copy only the hidden files.
– Geoff
Jan 30 '14 at 0:12
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Get first and last date of current month with JavaScript or jQuery [duplicate]
... a way to get the first and last date of the current month with JavaScript or jQuery, and format it as:
2 Answers
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What Does This Mean in PHP -> or => [duplicate]
...s -> do and what does => do. And I'm not talking about the operators. They're something else, but nobody seems to know...
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Detecting Windows or Linux? [duplicate]
... whether os.name property begins with Windows...
– George Chakhidze
Jun 17 '18 at 13:35
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@George...
Testing for empty or nil-value string [duplicate]
...a variable conditionally in Ruby. I need to set it if the variable is nil or empty (0 length string). I've come up with the following:
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warning C4172: returning address of local variable or temporary - C/C+...
warning C4172: returning address of local variable or temporarywarning C4172: returning address of local variable or temporary 返回单词出现的行号set const set<int> & TextQuery::R...warning C4172: returning address of local variable or temporary
//返回单词出现的行号set
const...
Windows下如何判断Win32 or x64？ - C/C++ - 清泛网 - 专注C/C++及内核技术
Windows下如何判断Win32 or x64？MSDN 里说，VC 有 3 个预处理常量，分别是 _WIN32，_WIN64，WIN32。这三个常量如何使用呢？看起来简单，其实是很困惑的。 在 Win3...MSDN 里说，VC 有 3 个预处理常量，分别是 _WIN32，_WIN64，WIN32。这三个...
解决：error while loading shared libraries: libpcre.so.1: cannot open ...
解决：error while loading shared libraries: libpcre.so.1: cannot open shared object file: No such file or directoryerror while loading shared libraries: xxx so 1: cannot open shared object file: No such file or directory错误原因是 error while loading shared libraries: xxx.so.1: cannot open...
[解决]CTRL: PTY read or GRE write failed - 更多技术 - 清泛网 - 专注C/C++及内核技术
[解决]CTRL: PTY read or GRE write failedslove-pptpd-vpn-pty-read-or-gre-write-failedpptp vpn服务器连接失败出现以下日志内容:（查看系统日志[cat var log messages |grep pptpd]后发现）GRE: read(fd=6,buffer=80504c0...pptp vpn服务器连接失败出现以下日志内容：
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