Monday, June 8, 2015

Riddle 3: not x~string`$x

Here’s an easy one:

When will {(10h=type x)&not x~string`$x} return true (1b)?

Slightly harder:

In cases where this is problematic, what can be done about it?

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At June 9, 2015 at 8:04 PM , Blogger Unknown said...

1) Strings with leading/trailing whitespace:

q){(10h=type x)&not x~string`$x} " 123"

2) I think where you are heading with this is - if you really must have spaces in your syms, you can generate such syms through bytecode manipulation:

` 123

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