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Set custom HTML5 required field validation message
...for example when it's not a valid email address)
You can either assign a string or a function to each of the three properties.
If you assign a function, it can accept a reference to the input element (DOM node) and it must return a string which is then displayed as the error message.
Compatibili...
How to use sed to replace only the first occurrence in a file?
...o' with 'bar' in the first matching line only.
Due to use of ANSI C-quoted strings ($'...') to provide the sample input lines, bash, ksh, or zsh is assumed as the shell.
GNU sed only:
Ben Hoffstein's anwswer shows us that GNU provides an extension to the POSIX specification for sed that allows th...
How to color System.out.println output? [duplicate]
...llowing will NOT color output in JavaScript in the Web Console
console.log(String.fromCharCode(27) + "[36mCYAN");
console.log("\x1b[30;47mBLACK_ON_WHITE");
Note that \x1b also works in node
In Shell Prompt OR Scripts
If you are working with bash or zsh, it is quite easy to color the output (i...
How to convert std::string to lower case?
I want to convert a std::string to lowercase. I am aware of the function tolower() , however in the past I have had issues with this function and it is hardly ideal anyway as use with a std::string would require iterating over each character.
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Writing Unicode text to a text file?
...you first get them and encoding them as necessary on the way out.
If your string is actually a unicode object, you'll need to convert it to a unicode-encoded string object before writing it to a file:
foo = u'Δ, Й, ק, م, ๗, あ, 叶, 葉, and 말.'
f = open('test', 'w')
f.write(foo.encod...
How do I set a conditional breakpoint in gdb, when char* x points to a string whose value equals “he
...an I specify that I want gdb to break at line x when char* x points to a string whose value equals "hello" ? If yes, how?
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How to check if a String contains another String in a case insensitive manner in Java?
Say I have two strings,
19 Answers
19
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Generate fixed length Strings filled with whitespaces
I need to produce fixed length string to generate a character position based file. The missing characters must be filled with space character.
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What are invalid characters in XML
I am working with some XML that holds strings like:
15 Answers
15
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How to prevent line break at hyphens on all browsers
...ng but letters and digits. The reason is that some browsers may even break strings like “2/3” or “f(0)” (see my page on oddities of line breaking in browsers).
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