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How do I perform a Perl substitution on a string while keeping the original?
In Perl, what is a good way to perform a replacement on a string using a regular expression and store the value in a different variable, without changing the original?
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Why isn't my Pandas 'apply' function referencing multiple columns working? [closed]
I have some problems with the Pandas apply function, when using multiple columns with the following dataframe
6 Answers
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how to run two commands in sudo?
Is there any way how I can run two Db2 commands from a command line? (They will be called from a PHP exec command.)
10 An...
sed whole word search and replace
How do I search and replace whole words using sed?
6 Answers
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App Inventor 2 项目合并工具 AIMerge · App Inventor 2 中文网
...bar .dropdown-item .mdi { margin-right: 6px; opacity: .7; } 创建 Apps 文档 文档首页 内置块参考文档 组件参考文档 拓展参考文档 概念参考文档 IoT 参考文档 技术和其他指南 中文网原创 VI...
How do I check that a Java String is not all whitespaces?
I want to check that Java String or character array is not just made up of whitespaces, using Java?
15 Answers
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Search and replace in Vim across all the project files
I'm looking for the best way to do search-and-replace (with confirmation) across all project files in Vim. By "project files" I mean files in the current directory, some of which do not have to be open.
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Import PEM into Java Key Store
I am trying to connect to an SSL server which requires me to authenticate myself. In order to use SSL over Apache MINA I need a suitable JKS file. However, I have only been given a .PEM file.
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How can I replace a newline (\n) using sed?
How can I replace a newline (" \n ") with a space (" ") using the sed command?
42 Answers
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How do I get the first n characters of a string without checking the size or going out of bounds?
How do I get up to the first n characters of a string in Java without doing a size check first (inline is acceptable) or risking an IndexOutOfBoundsException ?
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