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decide alone (Pure 027's stage 2a): {v:08x}, {p:.2f} (Python's mini-language, [0][width][.digits][d x X b o f]), a + b of texts or of bytes, b[a .. c] of bytes and of texts (a cut inside a character failing as encoding), byte(n), let s = bytes or text (16 of each a handler, s = s + e appending in place), while c { } as a count to 2^53 that breaks when c is false, && and || computing their right side only where it decides (an AND or OR still where it cannot fail: comparisons, states and fields, a walked item's fields, a number plus a small literal, what the left side computed; every module of the apps and benchmarks byte for byte the same but json's); examples/json.aup, examples/sha256.aup in formats and joined bytes; 14 diagnostics, one accepted form, 144 random formats against Python's format() and an app cutting at commas
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& | ^ ~ << >> on i64s by Python's precedence (a shift's count a number or an i64), b[i] the byte at a position of bytes (a field's, an argument's, a parameter's, bytes(t)), list of i64 (number, bool, text) as records of one field whose items read as their values, a let's list begun with [elements], xs[i] read and written by position (not_found past the end), bytes(xs), and a, b = x, y and let a, b = x, y given at once; examples/sha256.aup; 12 diagnostics, one accepted form, 192 random bit expressions against Python's integers and an app of bytes and lists
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