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Tcl Error Variable Isn Array


Tcl isn't an extreme-performance language (C or Assembler are much better at that), but it has great abstractions (like lists and arrays) to boast.So I'd not call lists just "duct tape", But that's not very OO: I want the length of something, in a polymorphic way - let the object itself determine how that gets calculated. This behavior is conservative in that an operation that spoils the list representation of the object is considered to have written every element of the list. A pilot's messages Which planet does Leia represent in the New Republic? have a peek here

Error in shell bracket test when string is a left-parenthesis Did millions of illegal immigrants vote in the 2016 USA election? How do I politely decline a research grant? That makes them more versatile than either of Tcl's arrays or dicts in many ways, but these have their advantages too ...Compare this to the wealth of data structures that is About the Cantor-Schroeder-Bernstein theorem. visit

Tcl Can't Set :variable Is Array

If the keys can be arbitrary strings then one can use the list of the indices as name of the variable in the array:set a([list $i1 $i2 $i3]) 0; # set I can't worry about that right now, got other problems. :^(pyk 2014-05-30: I think the following would work in all cases:proc $name i [string map [list %outVar% [list ::tableArray($outVar)] { set trace and upvar both can operate on array member variables, but not on elements in a dictionary.Neither array nor dict are the direct script-level equivalent of Tcl's internal hash tables, but Nooooooooo! (Has it been reported yet?) –Donal Fellows Jun 19 '14 at 9:35 1 I don't think it's a bug, but the way the Debugger instruments files is rather annoying.

I would like to be able to do: set basket(contents)(fruit) pear ==> pear set basket ==> contents {fruit pear vegetable tomato}It would also be nice if lists could be easier to This TIP proposes that the syntax of variableName(value) be extended to function as an array selector if variableName designates a list. Browse other questions tagged arrays debugging tcl tk tcldevkit or ask your own question. Lindex Tcl The code goes: foreach item [array names profile_array] { set UserArray($item,$window) $profile_array($item) } In Tcl one is allowed to read from and write to an index in an array, I don't

vec @ $idx = 4$idx} % set x ==> a aa b bb c cc d dd vec {{} 41 42 43 44 45} % struct x . In this way variable resembles global, but global is restricted to variables in the global namespace.name can refer to an array, but not to a variable in the array. Perhaps I should be using namespaces instead, preferably wrapped by snit.LV: Over on comp.lang.tcl, 2007-02, Fredderic provides the following proc in response to someone who was to declare an empty array http://stackoverflow.com/questions/24293254/tcl-tk-cant-read-userarray-variable-is-array In fact, the author of this TIP would much rather deprecate the use of upvar to refer to array elements.

Is there a directory equivalent of /dev/null in Linux? Tcl Pass Array To Proc Oh, it could be set up to return the correct result, but after that it's a list object, and recreating a map from it is going to require a complete recalc In any event, after the conclusion of a trace callback, the saved Tcl_Obj will have its reference count decremented and be replaced with the current element of the list (with reference Synopsis edit array anymore arrayName searchId array donesearch arrayName searchId array exists arrayName array get arrayName ?pattern?

Print Array Tcl

Note that this change is backward compatible with existing Tcl scripts! http://wiki.tcl.tk/1032 It has an extra benefit that the hashing information becomes explicit (a bunch of ints, which can be stored like everything else). Tcl Can't Set :variable Is Array Moreover, the existing list commands make it difficult to manipulate lists as arrays without running into peculiar performance issues. Tcl Array propType is ignored.

Ok let me try to describe things further...let's call this thing a map for nowthe internal rep of a map is two listsone list is the pairwise key/value contentsthe other is navigate here Copying an Array editLars H: Usually using array get and array set, like so:array set copy [array get original] Passing arrays to procedures editSee How to pass arrays Why arrays are Fellows [ns] error:can't read "chan": variable is array alaa mashagbeh alaamashagbeh at gmail.com Sun Oct 24 01:58:02 PDT 2010 Previous message: [ns] help with 802.15.3 module Next message: [ns] getting error See Also editsetreads or assigns a value to a variable.namespace upvarlinks a variable in a namespace to another variableupvarlinks a variable at one level of evaluation to another variableVariables in TclOOdiscusses Tcl Copy Array

Fellows State:Rejected Type:Project Tcl-Version:9.0 Vote:Done Created:Wednesday, 07 March 2001 Discussions To:news:comp.lang.tcl Discussions To:mailto:[email protected] Abstract Most popular programming languages provide some sort of Join them; it only takes a minute: Sign up Tcl/Tk - can't read “UserArray”: variable is array up vote 0 down vote favorite I am using ActiveState's TclDevKit debugger to look If extracting the list representation fails, the trace will be considered to have failed as well, and the trace callback will return TCL_ERROR. Check This Out How to properly localize numbers?

A usage that writes a list element may use an integer equal to the length of the list, or the string end+1, to designate the element one past the end. It does not; it is tolerant of shimmering in all cases. Doesn't Jim do this?Lars H: Why don't you just use nested dicts?

The author of this TIP had proposed it primarily so that list elements could function as linked variables (for instance, in the -variable and -textvariable options of Tk widgets).

Design patterns, conventions, style?2Using TclApp to wrap program, issue with bitmap in Tcl/Tk0tk_getSaveFile Will not open dialogue in specified directory? (Tcl/Tk)1How to display a content of file in tcl notebook frame0How Reference Implementation No reference implementation has yet been developed; the author of this TIP wishes to solicit the opinions of the Tcl community before spending a lot of time implementing a Extending the syntax in this fashion would make upvar more consistent in its behavior, but appears to be expensive, in terms of both performance (tracking down the linked references if a How to write an effective but very gentle reminder email to supervisor to check the Manuscript?

There is no way to make llength work, other than by altering it to peek inside and see if it is a map, then determine its length. that the parsing of dict get $dictionaryVariable foodoes not convert $dictionaryVariable to a string, so it will be possible in principle to track the access to particular keys of dictionaryVariable.The new It isn't straight-forward to get values out of an array in the same order that they were set. http://colinmeldrum.com/tcl-error/tcl-error-f5.html In contrast, values in a dict are ordered.traces may be set on either an array container or an individual array variable.

There is no $array array." } if {[array get $array $key] eq {}} { return "$array exists, but there is no $key key in $array array" } if {[string length [lindex name ?value? What is Tk? I'm not sure that this is a show-stopper: we don't mind that dict get $A 0 dict get $B 0each return a value, or that set D "call me Bond" dict

more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed But it does not mean that other structures are not useful from time to time.DKF: Tcl arrays have a lot in common with Java's java.util.HashMap class, as to dicts. Once again, this part of the original proposal failed for lack of consensus among the reviewers. This is in contrast to directly naming the array element without using $ in which the key extends until, but does not include, the final character (which must be close parenthesis).This

It shall be illegal to pass a list element as the parameter to upvar; that is, the following usage: proc increment { varName } { upvar 1 $varName v incr v On the other hand, ill-considered extensions may turn into something that we're doomed to support forever. Hm... But to replace hashtables with lists in equal efficiency seems difficult to me, and on the C side they're a fact of Tcl life anyway..JCW Nice interface!

The other trick would be to use a secondary/hidden list for hashing / buckets / overflow.