Revision as of 15:05, 10 June 2021 edit Macrakis (talk \| contribs) Autopatrolled, Extended confirmed users, Pending changes reviewers, Rollbackers 54,670 edits lambda and let are not simple blocks -- they are function and scope constructs ← Previous edit		Revision as of 16:05, 10 June 2021 edit undo Macrakis (talk \| contribs) Autopatrolled, Extended confirmed users, Pending changes reviewers, Rollbackers 54,670 edits I suppose let is more common than progn Next edit →
Line 53: * Parentheses - "<code>(</code>" and "<code>)</code>", are used in the MS-DOS [[batch language]] * [[off-side rule\|indentation]], as in [[Python (programming language)\|Python]] * [[s-expression]]s with a syntactic keyword such as <code>prog</code> or <code>~~progn~~let</code> (as in the [[Lisp (programming language)\|Lisp]] family) * In 1968 (with [[ALGOL 68]]), then in [[Edsger W. Dijkstra]]'s 1974 [[Guarded Command Language#Selection: if\|Guarded Command Language]] the conditional and iterative code block are alternatively terminated with the block reserved word ''reversed'': e.g. <code><u>'''if'''</u> ~ <u>then</u> ~ <u>elif</u> ~ <u>else</u> ~ <u>'''fi'''</u></code>, <code><u>'''case'''</u> ~ <u>in</u> ~ <u>out</u> ~ <u>'''esac'''</u></code> and <code><u>for</u> ~ <u>while</u> ~ <u>'''do'''</u> ~ <u>'''od'''</u></code>

Block (programming): Difference between revisions