always?,never?

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always?,never?

$\begin{usage} always?~c\\ never?~c \end{usage}$

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always?,never?: % $\to$ Boolean

$\begin{params} {\em c} & \% & a condition \end{params}$

$\begin{descr} always?~c and never?~c test respectively whether $c$\ is \htmlre... ...s}}{Condition:Always} or \htmlref{\texttt{Never}}{Condition:Never}. \end{descr}$

Manuel Bronstein 2000-12-13