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Sorting a dict
Arrays and dicts example from a Well House Consultants training course
More on Arrays and dicts [link]
Source code: rail_dict Module: T208
# Sorting a dict
set fh [open railstats.xyz r] # Create the dictionary while {[gets $fh here] >= 0} { set columns [split $here \t] set name [lindex $columns 6] set peeps [lindex $columns 7] if {$peeps > 800 && $peeps < 1200} { dict set counter $name $peeps } } proc val_num {a b} { global counter return [expr [dict get $counter $a] - [dict get $counter $b]] } # Get a list of the keys and sort them set stns [dict keys $counter] set sio [lsort -command val_num $stns] # Output them by looking up keys from the list foreach place $sio { set peeps [dict get $counter $place] puts [format "%-25s %5d" $place $peeps] } # You can also rebuild your dict in the new order foreach place $sio { set peeps [dict get $counter $place] puts $peeps dict set ordered $place $peeps } # (I have tested that but not added any puts to show you) exit ----------------------------------------------------------- Sample Output munchkin:ftcl grahamellis$ tclsh rail_dict Berney Arms 806 Pen-Y-Bont 829 Llanbister Road 852 Wressle 870 Llangynllo 872 Hopton Heath 904 Acklington 917 Quintrel Downs 918 St.Budeaux Ferry Road 969 Dolgarrog 992 Cilmeri 1023 Stromeferry 1035 Abererch 1038 Tal-y-Cafn 1039 St.Keyne 1053 Finstock 1055 Thurgarton 1056 South Bank 1057 Bynea 1064 Springfield 1076 Dovey Junction 1093 Burnley Barracks 1103 Georgemas Junction 1108 Roche 1137 Llandecwyn 1148 munchkin:ftcl grahamellis$ Learn about this subject
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