lua基础之debug

debug.debug()

enters interactive debugging
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debug.getfenv()

returns the environment of an object
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debug.gethook()

returns the current hook settings
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debug.getinfo()

returns a table with information about a function
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debug.getlocal()

returns name and value of a local variable
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debug.getmetatable()

returns the metatable of the given object
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debug.getregistry()

returns the registry table
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debug.getupvalue()

returns the name and value of an upvalue
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debug.setfenv()

sets the environment of an object
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debug.sethook()

sets a debug hook function
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debug.setlocal()

sets the value of the local variable
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debug.setmetatable()

sets the metatable for an object
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debug.setupvalue()

sets an upvalue for a function
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debug.traceback()

returns a string with a traceback of the stack call
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