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fixed a typo and a broken external link (#2554)

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Matt Doherty 2016-11-02 10:34:31 +00:00 committed by ven
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commit fe5a751c42
1 changed files with 3 additions and 4 deletions
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@ -6,9 +6,8 @@ contributors:
filename: learnkdb.q
---
The q langauge and its database component kdb+ were developed by Arthur
Whitney and released by Kx systems in 2003. q is a descendant of
[APL](https://en.wikipedia.org/wiki/APL_(programming_language)) and as such is
The q langauge and its database component kdb+ were developed by Arthur Whitney
and released by Kx systems in 2003. q is a descendant of APL and as such is
very terse and a little strange looking for anyone from a "C heritage" language
background. Its expressiveness and vector oriented nature make it well suited
to performing complex calculations on large amounts of data (while also
@ -698,7 +697,7 @@ first each (1 2 3;4 5 6;7 8 9)
/ their behaviour differs based on the number of arguments the function they
/ are modifying receives. Here I'll summarise some of the most useful cases
/ a single argument function modified by scan given 2 args behaves like "do"
{x * 2}\[5;1] / => 1 2 4 8 16 3 (i.e. multiply by 2, 5 times)
{x * 2}\[5;1] / => 1 2 4 8 16 32 (i.e. multiply by 2, 5 times)
{x * 2}/[5;1] / => 32 (using over only the final result is shown)
/ If the first argument is a function, we have the equivalent of "while"