Current File : //proc/self/root/opt/cpanel/ea-ruby24/root/usr/share/ri/system/Kernel/catch-i.ri
U:RDoc::AnyMethod[iI"
catch:ETI"Kernel#catch;TF: publico:RDoc::Markup::Document: @parts[o: RDoc::Markup::Paragraph; [I"N+catch+ executes its block. If +throw+ is not called, the block executes ;TI"Nnormally, and +catch+ returns the value of the last expression evaluated.;To: RDoc::Markup::BlankLine o:RDoc::Markup::Verbatim; [I"*catch(1) { 123 } # => 123
;T: @format0o;
; [ I"PIf <code>throw(tag2, val)</code> is called, Ruby searches up its stack for ;TI"Qa +catch+ block whose +tag+ has the same +object_id+ as _tag2_. When found, ;TI"Qthe block stops executing and returns _val_ (or +nil+ if no second argument ;TI"was given to +throw+).;T@o; ; [I"*catch(1) { throw(1, 456) } # => 456
;TI"*catch(1) { throw(1) } # => nil
;T;
0o;
; [I"JWhen +tag+ is passed as the first argument, +catch+ yields it as the ;TI" parameter of the block.;T@o; ; [I"(catch(1) {|x| x + 2 } # => 3
;T;
0o;
; [I"IWhen no +tag+ is given, +catch+ yields a new unique object (as from ;TI"O+Object.new+) as the block parameter. This object can then be used as the ;TI"Cargument to +throw+, and will match the correct +catch+ block.;T@o; ; [ I"catch do |obj_A|
;TI" catch do |obj_B|
;TI" throw(obj_B, 123)
;TI") puts "This puts is not reached"
;TI" end
;TI"
;TI"% puts "This puts is displayed"
;TI" 456
;TI" end
;TI"
;TI"# => 456
;TI"
;TI"catch do |obj_A|
;TI" catch do |obj_B|
;TI" throw(obj_A, 123)
;TI"/ puts "This puts is still not reached"
;TI" end
;TI"
;TI"0 puts "Now this puts is also not reached"
;TI" 456
;TI" end
;TI"
;TI"
# => 123;T;
0:
@fileI"vm_eval.c;T:0@omit_headings_from_table_of_contents_below0I")catch([tag]) {|tag| block } -> obj
;T0[ I"(p1 = v1);T@BFI" Kernel;TcRDoc::NormalModule00
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