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ReleaseHold

Usage

• ReleaseHold[expr] 去掉expr中的Hold, HoldForm, HoldPattern 和 HoldComplete.


Notes

• 例如: ReleaseHold[ 2, Hold[1 + 1] ]LongRightArrow .
• ReleaseHold 只去掉 Hold 等的一个层; 它不去掉嵌套Hold等函数中的内层.
• 参见 Mathematica 全书: 2.5.5节.
• 同时参见: Evaluate.
Further Examples

ReleaseHold only removes one layer of Holds.

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