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What does “fragment” mean in ANTLR?
... serves to simplify a grammar.
Consider:
NUMBER: DIGITS | OCTAL_DIGITS | HEX_DIGITS;
fragment DIGITS: '1'..'9' '0'..'9'*;
fragment OCTAL_DIGITS: '0' '0'..'7'+;
fragment HEX_DIGITS: '0x' ('0'..'9' | 'a'..'f' | 'A'..'F')+;
In this example, matching a NUMBER will always return a NUMBER to the lexer...
How to convert numbers between hexadecimal and decimal
How do you convert between hexadecimal numbers and decimal numbers in C#?
17 Answers
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Convert integer to hexadecimal and back again
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// Store integer 182
int intValue = 182;
// Convert integer 182 as a hex in a string variable
string hexValue = intValue.ToString("X");
// Convert the hex string back to the number
int intAgain = int.Parse(hexValue, System.Globalization.NumberStyles.HexNumber);
from http://www.geekpedia.com/...
Convert hex color value ( #ffffff ) to integer value
I am receiving hex color values from a server (in this form, #xxxxxx , example #000000 for black)
9 Answers
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CSS hexadecimal RGBA?
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The CSS Color Module Level 4 will probably support 4 and 8-digit hexadecimal RGBA notation!
Three weeks ago (18th of December 2014) the CSS Color Module Level 4 editor's draft was submitted to the CSS W3C Working Group. Though in a state which is heavily susceptible to change, the curren...
How do I get the color from a hexadecimal color code using .NET?
How can I get a color from a hexadecimal color code (e.g. #FFDFD991 )?
16 Answers
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A hex viewer / editor plugin for Notepad++? [closed]
...ed the forum for Notepad++ and have not seen a solution to editing data as hex in Notepad++ .
4 Answers
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Objective-C parse hex string to integer
I would like to know how to parse a hex string, representing a number, in Objective-C. I am willing to use both an objective, or a C-based method, either is fine.
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How to view files in binary from bash?
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xxd does both binary and hexadecimal.
bin:
xxd -b file
hex:
xxd file
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How can I use UIColorFromRGB in Swift?
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@ConsBulaquena it's just 0x followed by any hex color - color-hex.com
– bloudermilk
Mar 7 '18 at 16:59
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