Filter a list in tcl

Author: elkp

August undefined, 2024

WebOct 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 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 ...

lsearch manual page - Tcl Built-In Commands

WebA number of Tcl (and especially Extended Tcl) list commands use call-by-name to side-effect variables that contain lists. As usual, these commands are more efficient than … WebTRAN, and Java, there are no reserved strings. The ﬁrst word of a Tcl command line must always be a Tcl command; either a built-in command, a procedure name, or (when tclsh is in interactive mode) an external command. A complete Tcl command is a list of words. The ﬁrst word must be a Tcl command name or a procedure name. secret service cftf

How to Filter List Elements in Python By Practical Examples

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 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 WebJul 30, 2024 · Sorting a table can be done with lsort -index, taking care that the header line stays on top: proc tsort args { set table [lindex $args end] set header [lindex $table 0] set … purchasing chessboard at kearney

Introduction to the Tcl Language 3 - Elsevier

Tcl lists - ZetCode

http://computer-programming-forum.com/57-tcl/26cd986c9a8bd7cd.htm 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] purchasing church bonds for investmenthttp://www.wellho.net/mouth/3582_Tcl-collections-lists-dicts-and-array.html secret service cars for sale

"WebRationale. 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 … " - Filter a list in tcl

Filter a list in tcl

tcl, How to remove one element from a list

WebThe lmap command implements a loop where the loop variable (s) take on values from one or more lists, and the loop returns a list of results collected from each iteration. In the simplest case there is one loop variable, varname, and one list, list, that is a list of values to assign to varname. The body argument is a Tcl script.

Did you know?

WebMar 17, 2024 · This example is a bit contrived because it's probably easier to do the scripting in Tcl rather than use awk, but it does illustrate how to build program pipelines and properly quote arguments to the programs.. Tip: Cygwin On Windows, Cygwin can provide many of the programs that one would expect to find in a Unix environment. Exec when … WebThe filter for the collection is a Tcl list of wildcards, and must follow standard Tcl or TimeQuest-extension substitution rules. See help for the use_timequest_style_escaping …

WebJun 12, 2024 · You should expand the list returned by array get: lappend myList {*} [array get myArray] That said, to me it looks like all the keys in the array contain commas, and … 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 …

Webby setting a variable to be a list of values set lst { {item 1} {item 2} {item 3}} with the split command set lst [split "item 1.item 2.item 3" "."] with the list command. set lst [list "item … WebOct 16, 2024 · Read-only list operations leave the Tcl_HashTable untouched. Destructive list operations set the Tcl_HashTable pointer to NULL. (Or maybe they only do this when changing an even-numbered, i.e. key, element.) struct List and struct Dict are Tcl internals, so (as far as I know) this change can be made without breaking compatibility.

WebAug 6, 2013 · lsearch — See if a list contains a particular element SYNOPSIS lsearch ?options? list pattern DESCRIPTION This command searches the elements of list to …

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 ... secret service cat trainingWeb1. Command Line Scripting 2. Tcl Scripting 3. TCL Commands and Packages 4. Intel® Quartus® Prime Pro Edition User Guide Scripting Archives A. Intel® Quartus® Prime Pro Edition User Guides purchasing clerk dutiesWebMar 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. … purchasing clerkWebJan 10, 2024 · Another way to create a list is to use the list command. set l3 [split "1.2.3.4" .] Some Tcl commands return a list as a result. In the above code line, the split … purchasing city of el pasoWebThis TIP proposes to modify the Tcl semantic in order to check if the command name is a valid, three-elements Tcl list with the first element of the list being the string lambda, before to lookup any built-in command or procedure. purchasing chickens for laying eggshttp://tcl.tk/man/tcl8.5/tutorial/Tcl14.html secret service computer forensics trainingWebAug 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. secret service code name for jfk and jackie