• TJB (11/11) Aug 06 2014 I am trying to find the max and min values in an associative
• Justin Whear (4/17) Aug 06 2014 Do you just need the min and max values or do you also need the keys of
• TJB (3/7) Aug 06 2014 Justin,
• Martijn Pot (3/14) Aug 06 2014 You can extract the values into a double[] using bid.values. Then
• H. S. Teoh via Digitalmars-d-learn (8/18) Aug 06 2014 [...]
• monarch_dodra (3/9) Aug 15 2014 Take a look at Justin Whear's dpaste. Dual pred reduce FTW.
• H. S. Teoh via Digitalmars-d-learn (5/17) Aug 15 2014 Yeah I saw that. Learned something new. :-)
• bearophile (10/19) Aug 14 2014 void main() {

"TJB" <broughtj gmail.com> writes:

I am trying to find the max and min values in an associative 
array. Say I have:

double[char] bids;
bid['A'] = 37.50;
bid['B'] = 38.11;
bid['C'] = 36.12;

How can I find the max and min values. I am thinking that I need 
to use max and min functions from std.algorithm, but not sure how 
to.

Thanks!
TJB

Justin Whear <justin economicmodeling.com> writes:

On Wed, 06 Aug 2014 17:57:54 +0000, TJB wrote:

 I am trying to find the max and min values in an associative array. Say
 I have:
 
 double[char] bids;
 bid['A'] = 37.50;
 bid['B'] = 38.11;
 bid['C'] = 36.12;
 
 How can I find the max and min values. I am thinking that I need to use
 max and min functions from std.algorithm, but not sure how to.
 
 Thanks!
 TJB

Do you just need the min and max values or do you also need the keys of 
those values?  If the former, here's a paste: 
http://dpaste.dzfl.pl/0bbf31278a25

"TJB" <broughtj gmail.com> writes:

Justin,

That's it!  Perfect - thanks!!
TJB

 Do you just need the min and max values or do you also need the 
 keys of
 those values?  If the former, here's a paste:
 http://dpaste.dzfl.pl/0bbf31278a25

"Martijn Pot" <martijnpot52 gmail.com> writes:

On Wednesday, 6 August 2014 at 17:57:55 UTC, TJB wrote:
 I am trying to find the max and min values in an associative 
 array. Say I have:

 double[char] bids;
 bid['A'] = 37.50;
 bid['B'] = 38.11;
 bid['C'] = 36.12;

 How can I find the max and min values. I am thinking that I 
 need to use max and min functions from std.algorithm, but not 
 sure how to.

 Thanks!
 TJB

You can extract the values into a double[] using bid.values. Then 
you can simply use max and min from std.algorithm.

"H. S. Teoh via Digitalmars-d-learn" <digitalmars-d-learn puremagic.com> writes:

On Wed, Aug 06, 2014 at 05:57:54PM +0000, TJB via Digitalmars-d-learn wrote:
 I am trying to find the max and min values in an associative array. Say I
 have:
 
 double[char] bids;
 bid['A'] = 37.50;
 bid['B'] = 38.11;
 bid['C'] = 36.12;
 
 How can I find the max and min values. I am thinking that I need to use max
 and min functions from std.algorithm, but not sure how to.

[...]

	import std.algorithm : reduce, max, min;

	auto highest = reduce!((a,b) => max(a,b))(-double.max, bids.byValue());
	auto lowest = reduce!((a,b) => min(a,b))(double.max, bids.byValue());


T

-- 
Designer clothes: how to cover less by paying more.

"monarch_dodra" <monarchdodra gmail.com> writes:

On Wednesday, 6 August 2014 at 18:07:08 UTC, H. S. Teoh via 
Digitalmars-d-learn wrote:
 	import std.algorithm : reduce, max, min;

 	auto highest = reduce!((a,b) => max(a,b))(-double.max, 
 bids.byValue());
 	auto lowest = reduce!((a,b) => min(a,b))(double.max, 
 bids.byValue());


 T

Take a look at Justin Whear's dpaste. Dual pred reduce FTW.

"H. S. Teoh via Digitalmars-d-learn" <digitalmars-d-learn puremagic.com> writes:

On Fri, Aug 15, 2014 at 04:51:59PM +0000, monarch_dodra via Digitalmars-d-learn
wrote:
 On Wednesday, 6 August 2014 at 18:07:08 UTC, H. S. Teoh via
 Digitalmars-d-learn wrote:
	import std.algorithm : reduce, max, min;

	auto highest = reduce!((a,b) => max(a,b))(-double.max, bids.byValue());
	auto lowest = reduce!((a,b) => min(a,b))(double.max, bids.byValue());


T

 
 Take a look at Justin Whear's dpaste. Dual pred reduce FTW.

Yeah I saw that. Learned something new. :-)


T

-- 
Bare foot: (n.) A device for locating thumb tacks on the floor.

"bearophile" <bearophileHUGS lycos.com> writes:

TJB:

 I am trying to find the max and min values in an associative 
 array. Say I have:

 double[char] bids;
 bid['A'] = 37.50;
 bid['B'] = 38.11;
 bid['C'] = 36.12;

 How can I find the max and min values. I am thinking that I 
 need to use max and min functions from std.algorithm, but not 
 sure how to.

void main() {
     import std.stdio, std.algorithm;

     double[char] bids = ['A': 37.50,
                          'B': 38.11,
                          'C': 36.12];

     bids.byValue.reduce!(min, max).writeln;
}

Bye,
bearophile