Default scope function #2808
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Default scope function #2808
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reyoung
requested review from
Superjomn,
wangkuiyi,
jacquesqiao,
dzhwinter,
qingqing01,
JiayiFeng and
QiJune
`Paddle` manages Scope as programming language's scope. It just a thread-local stack of Scope. Top of that stack is current scope, the bottom of that stack is all scopes' parent. Invoking `create_var/get_var` can `create/get` variable in current scope. Invoking `enter_local_scope/leave_local_scope` can create or destroy local scope. A `scoped_function` will take a `function` as input. That function will be invoked in a new local scope.
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Superjomn
reviewed
Jul 11, 2017
| return __tl_scope__.cur_scope[-1] | ||
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| def enter_local_scope(): |
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scope 必须是连续么？
scopeA:
xxx
scope B:
xxxx
scopeA:
xxxx
不行么？
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不是特别清楚什么是『必须连续』？
但是，举的例子可以做到。
enter_local_scope() # scope A
xxx
enter_local_scope() # scope B
xxx
leave_local_scope()
xxx
leave_local_scope() # leave scope A
jacquesqiao
reviewed
Jul 13, 2017
| return get_cur_scope().get_var(name) | ||
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| def scoped_function(func): |
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what is the situation to use this function?
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Maybe used to define an RNN step net?
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But the scope of stepnet is create inside RnnOP as far as know
jacquesqiao
approved these changes
Jul 13, 2017
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Paddlemanages Scope as programming language's scope. It just athread-local stack of Scope. Top of that stack is current scope, the
bottom of that stack is all scopes' parent.
Invoking
create_var/get_varcancreate/getvariable in currentscope. Invoking
enter_local_scope/leave_local_scopecan create ordestroy local scope.
A
scoped_functionwill take afunctionas input. That function willbe invoked in a new local scope.