suve
awful: function: f-reset
Available since rev.36 (v.0.5.0).
Declaration
file :f-reset ( string $PATH )
Summary
Opens a file on the disk in read mode and returns a handle allowing to perform subsequent operations on the file. The file should be later closed with a call to :f-close.
If PATH does not exist (read), is not readable, or some other kind of error occurs, the returned filehandle will have its emodee flag set to einvalide. The simplest way to check if a file has been opened successfully is to cast it to bool - any invalid (or closed) handle will cast to FALSE.
Can be seen as a shorthand way of performing a :f-open $PATH sere call (actually, in interpreter innards, both do the same).
Example
# :f-reset example :set &file :f-reset s'example.txt' !if :not $file :writeln s'Unable to read from file!' :exit !fi :writeln :f-getln $file :f-close $file
wikipage modified on 2014/0611/1016
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