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Single-line comments begin with the hash character (#) and continue until the end of the line. Comments spanning more than one line are achieved by inserting a multi-line string (with """ or ''' as the delimiter on each end) that is not used in assignment or otherwise evaluated, but sits in between other statements. Commenting a piece of code:
A block comment is delimited with text that marks the start and end of comment text. It can span multiple lines or occupy any part of a line. Some languages allow block comments to be recursively nested inside one another, but others do not. [5] [6] [7] A line comment ends at the end of the text line.
Brackets are also allowed to be nested inside comments (i.e. #`{ a { b } c } goes to the last closing brace). Ruby. Block comment in Ruby opens at =begin line and closes at =end line. S-Lang. The region of lines enclosed by the #<tag> and #</tag> delimiters are ignored by the interpreter. The tag name can be any sequence of alphanumeric ...
Another alternative is for each block to begin and end with explicit keywords. For example, in ALGOL 60 and its descendant Pascal , blocks start with keyword begin and end with keyword end . In some languages (but not Pascal), this means that newlines are important [ citation needed ] (unlike in curly brace languages), but the indentation is not.
Python 3.0, released in 2008, was a major revision not completely backward-compatible with earlier versions. Python 2.7.18, released in 2020, was the last release of Python 2. [37] Python consistently ranks as one of the most popular programming languages, and has gained widespread use in the machine learning community. [38] [39] [40] [41]
A Here document allows the inclusion of arbitrary content by describing a special end sequence. Many languages support this including PHP, bash scripts, ruby and perl. A here document starts by describing what the end sequence will be and continues until that sequence is seen at the start of a new line. [25] Here is an example in perl:
In “The Flip Side of Fear”, we look at some common phobias, like sharks and flying, but also bats, germs and strangers. We tried to identify the origin of these fears and why they continue to exist when logic tells us they shouldn’t.
In programming, a docstring is a string literal specified in source code that is used, like a comment, to document a specific segment of code.Unlike conventional source code comments, or even specifically formatted comments like docblocks, docstrings are not stripped from the source tree when it is parsed and are retained throughout the runtime of the program.