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TagUnset

Usage

f/: lhs =. 去掉对lhs定义的和符号 f 关联的任何规则。


Notes

• 仅当它们的左边等于lhs并且在右边给出的Condition中的测试也相等去掉规则。
• 参见Mathematica 全书: A.2.7 and 节 A.5.4.
• 同时参见: Clear, Unset.
Further Examples

This defines a rule for numerical values of fff and associates it with fff.

In[1]:=  

The rule applies.

In[2]:=  

Out[2]=

The rule is undone with TagUnset.

In[3]:=  

The rule no longer applies applies.

In[4]:=  

Out[4]=