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<div>Hi,</div>
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<div>many thanks! The type signature helped fine:</div>
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<div>let rtHistogram = H.histogram numBuckets rtimesVec :: (V.Vector Double, V.Vector Double)</div>
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<div>On the other hand, when I tried</div>
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<div>{-# LANGUAGE NoMonomorphismRestriction #-}</div>
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<div>ghci told me to add<br/>
{-# LANGUAGE FlexibleContexts #-}</div>
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<div>after which it compiled, as long as I didn't try to additionally print it - there I got a similar error as before.</div>
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<div>So I'll stick with the type signature :-)</div>
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<div>thkx</div>
<div>Sigrid</div>
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<div style="margin:0 0 10px 0;"><b>Gesendet:</b> Samstag, 19. Dezember 2015 um 19:20 Uhr<br/>
<b>Von:</b> "Marcin Mrotek" <marcin.jan.mrotek@gmail.com><br/>
<b>An:</b> "Sigrid Keydana" <keydana@gmx.de><br/>
<b>Betreff:</b> Re: [Haskell-cafe] No instance of ... error with Statistics.Sample.Histogram</div>
<div name="quoted-content">You can try giving `rthistogram` an explicit type signature, like<br/>
<br/>
rthistogram :: (Vector Double, Vector Double)<br/>
<br/>
This might be related to "monomorphism restriction" too. You can try<br/>
turning it off with {-# LANGUAGE NoMonomorphismRestriction #-}, but<br/>
I'd advise you to read up on what it does before doing this (more or<br/>
less, it's on by default so that top-level things that look like<br/>
variables are monomorphic and thus can be shared. Polymorphic values<br/>
have to be recomputed every time they're used)<br/>
<br/>
Best regards,<br/>
Marcin Mrotek</div>
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