Sha256: 0968cf6f0aeb0a45802db3148ac7f55a835497c6268109d00de0409f555e8118
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Size: 859 Bytes
Versions: 3
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Stored size: 859 Bytes
Contents
module Kernel # Calling Kernel#trap() by itself will replace any previously registered # handler code. Kernel#trap_chain(), on the other hand, will add the block # you supply to the existing "list" of registered handler blocks. Similar # to the way Kernel#at_exit() works, Kernel#trap_chain() will prepend the # given block to the call chain for the given signal_name. When the signal # occurs, your block will be executed first and then the previously # registered handler will be invoked. This can be called repeatedly # to create a "chain" of handlers. # # CREDIT: Tyler Rick def trap_chain(signal_name, *args, &block) previous_interrupt_handler = trap(signal_name, *args) {} trap(signal_name, *args) do block.call previous_interrupt_handler.call unless previous_interrupt_handler == "DEFAULT" end end end
Version data entries
3 entries across 3 versions & 1 rubygems
Version | Path |
---|---|
facets-2.9.0 | lib/tour/facets/kernel/trap_chain.rb |
facets-2.9.0.pre.2 | lib/tour/facets/kernel/trap_chain.rb |
facets-2.9.0.pre.1 | lib/tour/facets/kernel/trap_chain.rb |