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Error Can Use Empty String As Operand Of


See double substitution. Is the sum of two white noise processes also a white noise? I do not think upgrading to the most recent version of BogusTrivia will help the issue, but would like to know for sure. 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

Can you check that ? –Dinesh Mar 22 '15 at 15:40 Do you really need to post all that code to show us the problem? is precomputed to 1.3333333333333333, but acos(-1) is not precomputed to 3.141592653589793. So after some grumbling I thought okay so I have to trimleft them. A bit is set in the result when the corresponding bit is set in precisely one of the arguments. | Bit-wise OR. http://wiki.tcl.tk/519

Error Can Use Empty String As Operand Of

I thought I remembered at least one TIP that dealt with a lambda construct, but when I looked for them I couldn't find any. Not suitable for financial rounding.sin(x)Sine (input in radians).sinh(x)Hyperbolic sine.sqrt(x)Square root (well, the positive square root only. But all of this is theoretical anyway, I'm fine with pass-by-name with generated names.AM I do not mind terribly either if the lambda's are generated "ordinary" procedures with names. Writing a proc for every little thing clutters the codebase, lambda is the perfect solution for that.3.

Sign up for the SourceForge newsletter: I agree to receive quotes, newsletters and other information from sourceforge.net and its partners regarding IT services and products. But, looking at the error message you got, it seems like the value of x read from the file might be a alphabet or special character instead of numerical value. But because of potential floating point precision issues (non-commutativity of operations), Tcl must play it safe and do the operations in the order specified:% tcl::unsupported::disassemble script {expr {4 * acos(-1) * Tcl Math Functions Tcl-Webserver/3.2.0 October 12, 2000 Tcl version 8.3.0 error info = can't use empty string as operand of "+" while executing "expr {$counter(total) + $delta}" (procedure "counter::count" line 3) invoked from within

If I am fat and unattractive, is it better to opt for a phone interview over a Skype interview? Tcl Round Is it terribly expensive? Concrete example: You have a list of data (e.g. for instance when attempting to 'dump the environment' I get.

just default eggdrop modules which comes together with eggdrop itself; Quote: Eggdrop v1.8.0+preinit (C) 1997 Robey Pointer (C) 2010 Eggheads [05:04:38] --- Loading eggdrop v1.8.0+preinit (Sun Aug 25 2013) [05:04:38] Module Tcl Addition If the projection of a straight line segment onto the X axis is x units long, and the projection of that line segment onto the Y axis is y units long, thanks David Thread view [Tclhttpd-users] ?? How to determine enemy ammo levels Is it a fallacy, and if so which, to believe we are special because our existence on Earth seems improbable?

Tcl Round

If I am fat and unattractive, is it better to opt for a phone interview over a Skype interview? https://sourceforge.net/p/tclhttpd/mailman/message/3094077/ Not the answer you're looking for? Error Can Use Empty String As Operand Of I'm trying to get the average value to the number of packets in the queue for each run. Tcl Modulo Could intelligent life have existed on Mars while it was habitable?

But if you want, you can use ( ... ) without fear: if {2 - 1 * 2} { puts yes } { puts no } gives no, because the expression The operators have the same meaning and precedence as the corresponding C operators. If you want nonconflicting names for the lambda object, you might use "very telling names": use the line set name $argl/$bodywhich completely describes the function being defined, and will not leak proc lambda {args body} { set name "\[[info level 0]\]" proc $name $args $body trace add execution $name leave unlambda return $name } proc unlambda {cmd args} { rename [lindex $cmd Tcl Integer

Back to top SpiKe^^MasterJoined: 12 May 2006Posts: 461Location: Tennessee, USA Posted: Thu Aug 29, 2013 1:13 pm Post subject: I have been testing the 1.8 version Eggdrop running BogusTrivia v2.06.4.6 The In particular, the special Tcl characters, $, [, ", { should normally be escaped:expr {$val1+$val2}This allows expr to do the interpretation, rather than having Tcl interpret them first and then having wiki.tcl.tk Lambda in Tcl Updated 2014-02-20 10:13:59 by PeterLewerin ▲ (See also the apply command, new in 8.5, that provides built-in support for lambdas)Note also the lambda package in Tcllib.Richard Suchenwirth New in Tcl 8.5. & Bit-wise AND.

Amoung other reasons, it would clean up code to be able to write scrollbar -command [lambda {command numOrFrac {type ""}} { do some things with the commands }]... Tcl Modulus I get it now.Still, using eval is a partial solution. See below for more details.expr expressions differ from C expressions in the way that operands are specified.

Can handle cases which plain atan() can't (due to division by zero) and has a larger output range (result in radians).bool(x)Accepts any valid boolean value and returns the corresponding boolean value

Scheme), lambda is integrated to the concept of the language. See also the counted package adaptation below too, which returns lappended results after renaming of procName:# first tip set L {10 20 30 40 50} proc map {fun list} { set My bogus is translated version. Format In Tcl if {(2 - 1) * 2} { puts yes } { puts no } gives yes because (2 - 1) * 2 is 2.

Which argument might it be? This is nice, as it has "free" garbage collection - no proc to explicitly delete. This operation is a short-circuiting operation, and will only evaluate its second argument when the first argument is non-zero. And part of the fun is to explore these theoretical ways.Another thing that occurred to me: The [eval] can be hidden by redefining [unknown] to take care of it :)SS: I

Thanks for very nice explanation of underlying principles. –Ratnendra Pandey Nov 9 '12 at 16:44 add a comment| up vote 1 down vote Try to [expr $HI == 1] instead of Back to top SpiKe^^MasterJoined: 12 May 2006Posts: 461Location: Tennessee, USA Posted: Sat Aug 24, 2013 10:31 am Post subject: Very sorry to hear of timer issues with the eggdrop 1.8 bot. What is Tk? You should write whichever is clearer to you. (Myself, I hardly ever use the second form, reserving nesting [expr] in an expression context for cases where I want to have a

This generally helps, so long as the subexpressions aren't too simple, but you must use local variables or else performance will suffer:% proc a {x} {expr {cos($x * acos(-1)) + sin($x FAQ Search Memberlist Usergroups Register Profile Log in to check your private messages Log in Bogustrivia issues with Eggdrop 1.18 egghelp.org community Forum Index -> Script Support & Releases These pages have inspired quite a few of them.So, what would a production ready lambda look like? Could accessed sites over an SSH tunnel be tracked by ISP?

procs and lambdas should relate to each other as arrays and dictionaries, and there we see that accessing the former happen as part of parsing, whereas accessing the latter requires a Here is another example in which arguments are concatenated, and don't form a correct expression:set color1 green set color2 green #wrong expr $color1 eq $color2 ;# -> invalid bareword "green"Concatenated, the rather than having to create a proc for every scrollbar, button, and everything else that takes a command arguement/option. This is done in hardware to guarantee the convergence in the case of a series of math algorithms.

How to mix correctly? separate [commands] (Tcl 8.4 and older) 32-bit integer limitations editAddition% expr (1<<31)-1 2147483647 % expr 2147483647 + 2147483647 -2Multiplication% expr sqrt((1<<31)-1) 46340.9500011 expr 46341*46341 -2147479015These are results of Tcl 8.4 and That will teach me to take shortcuts and just search for lambda on the TIP page.SS: A pure Tcl implementation of TIP 187 is available in the TIP187 in pure Tcl Would a fighter jet be able to go into orbit from Mars surface?

However, the performance is not always quite as good as one would hope. Returns e to the power of x, where e is the base of natural logarithms.floor(x)Floor (defined over floating-point numbers.) If the input value is not a whole number, return the next x, y, and z are expressions. Equivalent to multiplying or dividing by a suitable power of two, and then reducing the result to the range representable in an integer on the host platform. < > <= >=

Wouldn't [trace add execution $name leave] do the trick? The notion that the natural way of calling a lambda is to use the variable in which it is stored where one would otherwise have expected a command names comes from Suggestion to Reparse expr Variables editRS suggests that arguments to expr could be reparsed so that full mathematical expressions in variable values would interpreted as suchRS 2003-04-24: Here's a tiny wrapper