Filter a list in tcl
WebJan 10, 2024 · A Tcl list indexing starts with 0. The above commands print the elements of the list at positions 1 and 4. puts [lindex $vals end] puts [lindex $vals end-2] The end string represents the last element's index. It is also possible to substract an integer from it. $ ./retrieving.tcl 2 8 14 10 WebAug 6, 2013 · This command takes three arguments, the first a two-element list of variable names (for the key and value respectively of each mapping in the dictionary), the second the dictionary value to iterate across, and the third a script to be evaluated for each mapping with the key The result of the command is an empty string.
Filter a list in tcl
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My goal is to take a an existing list and then create a filter list based on a specific pattern. I do not want to use a for loop or while loop. Example of what I want. set existing_list [list "color_blue12312" "color_blue32311" "color_green123j11" "color_green234321" "color_purple213123" "color_purple234234234"] set purple_list [lsearch ... Weblremove returns a new list formed by simultaneously removing zero or more elements of list at each of the indices given by an arbirary number of index arguments. The indices may be in any order and may be repeated; the element at index will only be removed once. The index values are interpreted the same as index values for the command string ...
WebJun 28, 2004 · I found the solution for the filter option with the function proc filter {} { global cur_seisinfo filter set cur_seisinfo [lsearch -inline -all -glob $cur_seisinfo $filter] } NOw the problem is the Search function: I can apply the same test as above to create a new list say set temp [lsearch -inline -all -glob $cur_seisinfo $filter] WebShop for TCL A215B Breeva A2 Home HEPA H13 Filter Clean Compact Air Purifier 360, Black - 2.9. Free Shipping on Everything* at Overstock - Your Online Housewares Shop! - 36251659
Webset alpha [list a b c d e f] foreach {key} $alpha { puts "key: $key" } Multiple variable names may be specified. set alphaindexes [list a 1 b 2 c 3 d 4 e 5 f 6] foreach {key num} … WebIn Tcl, almost all variables are what is described as "pure" - which means that they hold data as strings of text which can be passed, substituted with a $ prefix, etc. Special interpretation on pure variables allows them to be treated as: • integers • floats • lists • dicts • file handles
WebJul 9, 2024 · The other way to remove an element is to filter it out. This Tcl 8.5 technique differs from the lsearch & lreplace method mentioned elsewhere in that it removes all of a …
WebTcl - Dictionary. Previous Page. Next Page . A dictionary is an arrangement for mapping values to keys. The syntax for the conventional dictionary is shown below − ... top ten college fight songsWebschlenk: tcllib, prioqueue and skiplist have some 'sorted list' kind of functionality.. NEM: With regard to the drawback of the array-based implementation, have you tried using dicts? … top ten colleges on the west coastWebOct 25, 2024 · The filter () function in Python takes in a function and a list as arguments. This offers an elegant way to filter out all the elements of a sequence “sequence”, for which the function returns True. Here is a small program that returns the odd numbers from an input list: Example 1: Filter out all odd numbers using filter () and lambda function top ten colleges in the us rankWebMar 8, 2005 · A filter is a pipeline that produces data which represents an edited version of its input.. See Also the filter idiom Tcl's simple syntax for reading and writing to stdin. … top ten comfy shoesWebAbstract. This TIP proposes a command, lremove, that takes a list value and a collection of indices, and returns a list that is the input list with the elements at those indices removed. Rationale. Tcl has many operations for working with lists, such as list for building them, lappend for adding to them, linsert for insertion, lreplace for replacement of ranges, and … top ten comic book moviesWebNov 13, 2024 · RS: Easy, just use a filter: proc filter { cond list } { set res {} foreach element $list { if {[$cond $element]} { lappend res $element } } set res } % filter llength [ split { a list with many spaces }] a list with many spaces ... or use % split [ regsub - all {[ \ t \ n ]+} { a list with many spaces } { }] to eliminate the excess white space ... top ten college football coachesWeblgetsis list-oriented (it reads Tcl lists). The getsCommand The getscommand comes in two flavors. form takes a file descriptor as a parameter and returns the next line from the file. End of file is indicated as the empty string; since this is ambiguous, you may want to use the eofcommand to test whether or not end of file actually occurred. top ten columbus ohio restaurants