mirror of
https://github.com/polserver/polserver
synced 2026-08-13 08:23:08 -04:00
60 lines
2.2 KiB
Text
60 lines
2.2 KiB
Text
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// Subscripting a string, slicing it, and what each string method says when it is called with
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// the wrong number or type of parameters.
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program string28()
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var s := "hello world";
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print( "--- subscripting" );
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print( "integer: " + s[2] );
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// a real index is truncated to a position, it is not a slice
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print( "real: " + s[2.0] );
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print( "past end: " + s[99] );
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print( "--- slicing" );
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print( "from, len: " + s[2, 3] );
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// a string start means "from where this is found", and the length still counts characters
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print( "find: " + s["world"] );
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print( "find, len: " + s["world", 3] );
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print( "not found: " + s["zz"] );
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print( "real length: " + s[2, 3.0] );
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print( "start zero: " + s[0, 3] );
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print( "start past: " + s[99, 3] );
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print( "--- assigning through a slice" );
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var t := "hello world";
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t[1, 5] := "howdy";
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print( "replaced: " + t );
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t["world"] := "there";
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print( "by find: " + t );
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print( "out of rng: " + ( t[99, 2] := "x" ) );
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print( "--- method parameters" );
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print( "length: " + s.length( 1 ) );
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print( "find none: " + s.find() );
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print( "find three: " + s.find( "world", 1, 1 ) );
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print( "find type: " + s.find( 1 ) );
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print( "split none: " + s.split() );
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print( "split three: " + s.split( " ", 1, 1 ) );
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print( "split type: " + s.split( 1 ) );
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print( "upper: " + s.upper( 1 ) );
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print( "lower: " + s.lower( 1 ) );
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print( "format none: " + "{}".format() );
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print( "join none: " + ",".join() );
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print( "join type: " + ",".join( 1 ) );
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print( "unknown mth: " + s.zzz_not_a_method() );
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print( "--- format tags" );
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// a tag naming a property has to say which parameter the property belongs to
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print( "no index: " + "{x.prop}".format( struct{ prop := 5 } ) );
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print( "with index: " + "{1.prop}".format( struct{ prop := 5 } ) );
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print( "padded: " + "{ 1 }".format( 7 ) );
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print( "unclosed: " + "{".format( 7 ) );
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print( "missing arg: " + "{1}{2}".format( 7 ) );
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// join skips the holes of an array rather than joining empty strings for them
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var holes := array{};
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holes[3] := "x";
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print( "join holes: " + ",".join( holes ) );
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endprogram
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