string-format: String.format/formatted/printf cheat sheet module (specifier anatomy, rounding vs C printf, locales, Indian lakh/crore grouping Formatter cannot do, format exceptions, %t dates, concat cost), 11 contract tests

Co-Authored-By: Claude Sonnet 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_017ic4b7Sr2zcoRD2watXv1G
2026-11-12 11:00:22 +05:30
parent db129fb1ce
commit 319697c345
29 changed files with 859 additions and 0 deletions
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+Item                 Qty      Price        Total
+------------------------------------------------
+Notebook              12      45.50       546.00
+Pen (box of 10)        3     120.00       360.00
+Stapler                1     350.00       350.00
+------------------------------------------------
+Grand total                             1,256.00
+
+== the same table with printf: it prints, it does not return a String ==
+Notebook          |   12|
+
+== truncation: %.Ns cuts, width pads ==
+[Pen (b    ] [    Pen (b]