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- wwwwhhhhiiiilllleeee((((nnnn)))) TTTTccccllll (((( )))) wwwwhhhhiiiilllleeee((((nnnn))))
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- _________________________________________________________________
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- NNNNAAAAMMMMEEEE
- while - Execute script repeatedly as long as a condition is
- met
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- SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
- wwwwhhhhiiiilllleeee _t_e_s_t _b_o_d_y
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- DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
- The _w_h_i_l_e command evaluates _t_e_s_t as an expression (in the
- same way that eeeexxxxpppprrrr evaluates its argument). The value of
- the expression must a proper boolean value; if it is a true
- value then _b_o_d_y is executed by passing it to the Tcl
- interpreter. Once _b_o_d_y has been executed then _t_e_s_t is
- evaluated again, and the process repeats until eventually
- _t_e_s_t evaluates to a false boolean value. CCCCoooonnnnttttiiiinnnnuuuueeee commands
- may be executed inside _b_o_d_y to terminate the current
- iteration of the loop, and bbbbrrrreeeeaaaakkkk commands may be executed
- inside _b_o_d_y to cause immediate termination of the wwwwhhhhiiiilllleeee
- command. The wwwwhhhhiiiilllleeee command always returns an empty string.
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- KKKKEEEEYYYYWWWWOOOORRRRDDDDSSSS
- boolean value, loop, test, while
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- Page 1 (printed 7/17/95)
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