Escape sequence
An escape sequence is source notation, typically using an escape marker, that represents a character or control value or changes how characters are interpreted.
Modern C
An escape sequence is a C source notation beginning with a backslash that encodes a character or special value.
- How it is used
- Uses escapes to control `printf` output and specify Unicode characters in C string literals.
- How deep it goes
- Explains two output escapes and the four- and eight-digit Unicode forms, but does not develop a general escape catalogue.
- Examples
- Shows `\t` and `\n` in formatted output, `"\u00E4"`, and macros for graphical characters.
- What you can do after
- Apply it to write tabs, newlines, and specified Unicode characters in C literals.
Modern C, Third Edition
An escape sequence is source-code notation beginning with a backslash that encodes a character or special value.
- How it is used
- Supplies special output characters in printf formats and specifies Unicode code points in C multibyte string literals.
- How deep it goes
- Works through tab, newline, and four-digit Unicode notation, then notes eight-digit notation; does not enumerate all C escapes.
- Examples
- Uses a printf call containing `\t` and `\n`, `"\u00E4"`, and macros for Unicode box-drawing characters.
- What you can do after
- Apply it via printf and C string literals to control output layout and spell selected Unicode characters in source.
The Well-Grounded Rubyist, Fourth Edition
Character escaping is syntax that represents special characters or prevents characters from being interpreted as delimiters or interpolation markers.
- How it is used
- Controls literal characters and syntax interpretation in Ruby strings and regular expressions.
- How deep it goes
- Works through quoting, heredocs, regexp metacharacters, and dynamically constructed patterns, including the two parsing layers of Regexp.new.
- Examples
- Contrasts newline and tab output across quotation styles, then tests whether an interpolated dot matches a literal dot or any character.
- What you can do after
- Apply it via Regexp.escape to match interpolated text literally, and write string escapes that survive passage to Regexp.new.
Read how The Well-Grounded Rubyist, Fourth Edition explains escape sequence →
100 Java Mistakes and How to Avoid Them
An escape sequence is a backslash-initiated notation in a string or character literal that represents a special character or character value.
- How it is used
- Prevents malformed Java literals and regex patterns caused by treating backslashes as ordinary characters.
- How deep it goes
- Explains common escapes, silent literal changes, regex double interpretation, and path-based prevention.
- Examples
- Uses Windows paths, regex word boundaries, IDE highlighting, and Path.of as concrete examples.
- What you can do after
- Diagnose silently altered literals and construct paths or regex patterns with the required escaping.
Read how 100 Java Mistakes and How to Avoid Them explains escape sequence →
Learn Rust in a Month of Lunches
An escape sequence is a character sequence in a string literal that represents a special character or encoding instruction.
- How it is used
- Uses escape sequences to control printed line breaks, tabs, quotation marks, backslashes, and Unicode characters.
- How deep it goes
- Explains common escapes, Unicode notation, raw-string alternatives, and delimiter adjustments, while stopping short of broader string formatting.
- Examples
- Shows newlines, tabs, escaped quotes, file paths, raw strings, hashtags, byte strings, and Unicode escapes.
- What you can do after
- Apply it via Rust string literals to represent special characters and choose raw strings when escaping becomes cumbersome.
Read how Learn Rust in a Month of Lunches explains escape sequence →
The Quick Python Book, Fourth Edition
An escape sequence is a character sequence in a string literal that represents a character or control function using a backslash-based notation.
- How it is used
- Represents special characters and control functions inside Python string literals.
- How deep it goes
- Defines basic, numeric, and Unicode forms, then explains regex double interpretation; it defers broader Unicode-system details.
- Examples
- Uses newlines, tabs, quotes, backslashes, ASCII codes, Unicode names, and regex patterns as concrete examples.
- What you can do after
- Apply escape sequences to write strings containing control characters, quotes, backslashes, ASCII characters, and Unicode characters.
Read how The Quick Python Book, Fourth Edition explains escape sequence →
Related concepts
- escape characteruses · A backslash is a punctuation character commonly used in programming and text syntaxes to introduce an escape sequence or alter the interpretation of a following character.
- autoescape tagcontrasts with · An autoescape tag is a template directive that controls whether interpolated content is automatically escaped before rendering.
- f-stringused by · An f-string is a Python formatted string literal that evaluates embedded expressions and inserts their formatted values into the resulting string.
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