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message after print to stderror not shown
<div>
</div>in the below function, if we remove “show” then the date won’t be displayed–my guess is it is due to the .z.D expression is after the -2 print? I guess we could leave the .z.D outside IF which guarantees the display, just wondering in general if any result after -2 print will not get shown, unless itself is part of -2 print ?
checkIfThresholdBreached: {[num] if[num>=0.9;-2″Warning! Threshold breached. Level is above 90%”; show .z.D ]}
checkIfThresholdBreached[1.89]
Thank you,
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2 Replies
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If statements in q do not return data.
“The result of if is always the generic null.”
q)result:if[1b;1]
q)result
q).Q.s1 result //The generic null is returned
"::"
//You can include the date in the printed output:
q){if[x>1;-2"Warn ",string[x]," above threshold 1 ",string .z.D]} 2
Warn 2 above threshold 1 2024.04.22
code.kx.com
if control word | Reference | kdb+ and q documentation - Kdb+ and q documentation
if is a q control construct for conditional evaluation of one or more expressions.
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understood, thanks!
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