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  • How to print new line character with echo?

    - by Summer_More_More_Tea
    I dump a string with hexdump like this 2031 3334 2e30 0a32 2032 3331 302e 000a. It is clear that 0x0a is new line character, however, when I try to echo this string out, I always got 1 430.2 2 13.0 -- the new line is replaced with a space, even I use the -e flag. What may be the problem? Does the tailing \0 ruin the output? Is there any alternatives to print 0x0a a new line? Thanks and Best regards.

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  • Move markers of line chart/ Format legend

    - by user68753
    Hi all, I have a combination chart with a bar chart and 2 line graphs on secondary axis. have to exactly match the formatting in the screenshot attached ( I do not have the actual excel file. just have a screenshot). If you have a look - you can see the markers on line graphs do not align. The red line markers are skewed slightly to the left. Also, in the legend at the bottom - secondary axis legends are separated out to the bottom. I don't know how to do that either. Any help is greatly appreciated

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  • timeout duration on linux

    - by user1319451
    I'm trying to run a command for 5 hours and 10 minuts. I found out how to run it for 5 hours but I'm unable to run it for 5 hours and 10 minuts.. timeout -sKILL 5h mplayer -dumpstream http://82.201.100.23:80/slamfm -dumpfile slamfm.mp3 runs fine. But when I try timeout -sKILL 5h10m mplayer -dumpstream http://82.201.100.23:80/slamfm -dumpfile slamfm.mp3 I get this error timeout: invalid time interval `5h10m' Does anyone know a way to run this command for 5 hours and 10 minuts and then kill it?

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  • How to check Cookie header line and custom cache on Nginx

    - by user124249
    I am trying cache for my website use Nginx Proxy module and has following requirements: If request has cookie (in request header) The response will use cache of Nginx Hide Set-Cookie header line If request has no cookie (in request header) Foward request to backend Don't hide h Set-Cookie header line I use If (of rewrite module) and any directive: if (!-e $http_cookie) { set $not_cache_rq 0; set $not_cache_rp 0; } if ($http_cookie) { set $not_cache_rq 1; set $not_cache_rp 1; } proxy_cache_bypass $not_cache_rq; proxy_no_cache $not_cache_rp; proxy_hide_header Set-Cookie; I do not know how to call cookie proxy_hide_header option when has cookie and no cookie on header line. Please help me. Many thanks.

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  • Cannot assign multi-line values to CustomAttributes with Set-Mailbox

    - by Biglig
    A colleague is implementing an application that generates signatures and publishes them to Outlook. It would be useful to him if I could store a multi-line string for each user in Active-Directory. Using one of the Custom-Attributes seems obvious, but if I try set-mailbox biglig -CustomAtribute1 "First Line``r``n Second Line" then CustomAttribute1 gets set to "FirstLineSecondLine" and looses the breaks. However, the same syntax works fine when I set e.g. StreetAddress or Notes. Of course, those are changed with set-user rather than set-mailbox. According to Technet's reference for set-user and set-mailbox, The CustomAttributes, StreetAddress, and Notes all take a system.string as their value. Is it just the case that some attributes accept multi-line strings and some don't? If so, can anyone suggest a workaround?

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  • Kill all currently running cron jobs

    - by Adelphia
    For some reason my cron job scripts aren't exiting cleanly and they're backing up my server. There are currently a couple hundred processes running for one of my users. I can use the following command to kill all processes by that user, but how can I simplify this to kill only crons? pgrep -U username | while read id ; do kill -6 $id ; done It would be dangerous to run the above command as is, correct? Wouldn't that kill mysql and other important things?

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  • Windows 7: How to stop/start service from commandline (like services.msc does it)?

    - by john
    I have developed a program in Java that uses on a local SQL Server instance to store its data. On some installations the SQL Server instance is not running sometimes. Users can fix this problem by manually starting the SQL Server instance (via services.msc). I am thinking about automating this task: the software would check if the database server is reachable, if not try to (re)start it. The problem is that on the same user account the Services can be stopped /started via services.msc (without any UAC prompt), but not via (non-elevated) command line. The operating system seems to treat services.msc differently: c:\>sc start mssql$db1 [SC] StartService: OpenService FEHLER 5: Zugriff verweigert (Access denied) c:\>net start mssql$db1 Systemfehler 5 aufgetreten. Zugriff verweigert (Access denied) So the question is: how can I stop/start the service from a java-program/command line without having my users to use services.msc (preferrably via on-board-tools)

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  • cd ~ dumps me in a seemingly empty directory

    - by Davidos
    This is on a Linux mint box. I'm told everywhere to use the command cd ~ To switch to the root directory before doing some command line magic. For some reason though, it dumps me in a directory named ~ where ls gives nothing and I can't get back to my home directory; I have to restart the terminal session to get out of the empty root directory. I'm positive that everything is just hidden to me, but even as a super-user I can't get the folders to show themselves. I usually just fall back to using a graphical file browser to roam those forbidden files, but I've recently just been shut out of my root directory, and the machine refuses to allow me to change the permissions on the stupid thing even when I type the root password in. It may just be some over-rigorous end-user shielding on the part of the mint team, but it's getting to be really frustrating now.

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  • zend tool is not working

    - by user362155
    Hi, I've installed ZendStudio 7.2 it creates project normally with no error but when i try to add action(s) in it, it says project profile does not exist. and the error log is as follow: executing zf create action showLatest index-action-included An Error Has Occurred A project profile was not found. Zend Framework Command Line Console Tool v1.10.2 Details for action "Create" and provider "Action" Action zf create action name controller-name[=Index] view-included[=1] module Failed loading ./ZendDebugger.so: (null) PHP Warning: PHP Startup: Unable to load dynamic library './ext/bcmath.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/bz2.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/calendar.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/ctype.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/curl.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/exif.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/fileinfo.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/ftp.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/gd.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/imagick.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/json.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/ldap.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/mbstring.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/mcrypt.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/memcache.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/mhash.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/mime_magic.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/mssql.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/mysql.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/mysqli.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/pcntl.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/pgsql.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/posix.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/shmop.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/soap.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/sockets.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/sqlite.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/sysvmsg.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/sysvsem.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/sysvshm.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/tidy.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/tokenizer.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/wddx.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/xmlreader.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/xmlrpc.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/xsl.so' - (null) in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library './ext/zip.so' - (null) in Unknown on line 0 please help me to configure latest ZendTool with ZendStudio 7.2 or how can i get rid of this. i am runin ZS 7.2 on my mac os x 10.5.8 thanks.

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  • How to do grap data between two file in Linux?

    - by user28167
    I have two .rtf file.... The first one have this content: Apple, Orange, Banana, Noodle, Chip The Second File is something like this: Apple I love eat Apple. Banana I hate Banana. Zoo I want to go Zoo. Noodle Noodle can be a very very very very very very very very very very very long, but still is one line. Chip Don't eat so many chip. Orange Orange is great, not Apple plx. Noodle Water Drinking water is boring. The first file is a "key" of second file. In the second file, the first word is the key of each line. Each key and sentence in second file ONLY have one line. The Second File have many lines with key, but not all the key is shown on file1, but file1's key MUST in the second file. How can I get the result like this: (Need to sort by the key from File1) Apple, Apple I love eat Apple. Orange, Orange is great, not Apple plx. Banana, I hate Banana. Noodle, can be a very very very very very very very very very very very long, but still is one sentence. Chip, Don't eat so many chip.

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  • How to search file for matching whole lines?

    - by WilliamKF
    I have a command which sends to stdout a series of numbers, each on a new line. I need to determine whether a particular number exists in the list. The match needs to be exact, not a subset. For example, a simple way to approach this that does not work would be to do: /run/command/outputing/numbers | grep -c <numberToSearch> My this gives a false positive on the following list when searching for '456': 1234567 98765 23 1771 If the count is non-zero, a match was found or if it was zero, the number is not in the list. The issue with this is that the numberToSearch could match a subsequence of numbers on a line, instead I only want hits on the whole line. I looked at the man page for grep and did not see any way to only match whole lines. Is there a way to do this, or would I be better off using awk or sed or some other tool instead? I need a binary answer as to whether the number being search for is present or not.

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  • MD5 wrong number of arguments (1 for 0) Error

    - by Salil
    Hi All, I have following error on my Server which is working properly on my local on following line . event_id = MD5.new("event-init-flash-#{Asteroid::now}").to_s #line 232 ERROR: wrong number of arguments (1 for 0) /ruby/gems/gems/shooting_star-3.2.7/bin/../lib/shooting_star/server.rb:232:in initialize' /ruby/gems/gems/shooting_star-3.2.7/bin/../lib/shooting_star/server.rb:232:in new' /ruby/gems/gems/shooting_star-3.2.7/bin/../lib/shooting_star/server.rb:232:in make_flash_connection' /ruby/gems/gems/shooting_star-3.2.7/bin/../lib/shooting_star/server.rb:70:in receive_data' /ruby/gems/gems/shooting_star-3.2.7/bin/../lib/shooting_star.rb:87:in run' /ruby/gems/gems/shooting_star-3.2.7/bin/../lib/shooting_star.rb:87:in start' /ruby/gems/gems/shooting_star-3.2.7/bin/shooting_star:61 /ruby/gems/bin/shooting_star:19:in `load' /ruby/gems/bin/shooting_star:19 POST /10 HTTP/1.1 Host: 67.222.55.30:8080 Content-length: 103 I used shooting_star to create an Chat Application. Ref:- http://github.com/genki/shooting-star Following are the REQUIREMENTS of the shooting_star Linux or xBSD OS having epoll or kqueue. Increase ulimit of nofile up to over 100,000. (edit /etc/security/limits.conf file.) prototype.js 1.5.0+ Ruby 1.8.5+ Ruby on Rails 1.2.0+ My Local Configuration are O.S Linux Ruby ruby 1.8.6 (2009-08-04 patchlevel 383) [i386-linux] Rails 2.3.4 shooting_star 3.2.7 prototype.js 1.6.0.3 My Server Configuration are O.S Linux Ruby ruby 1.8.6 (2009-08-04 patchlevel 383) [x86_64-linux] Rails 2.3.4 shooting_star 3.2.7 prototype.js 1.6.0.3 I just want to know what is the problem why it's not working on server if everything is fine in local. Regards, Salil Gaikwad

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  • no statement parsed and wrong number or types of arguments - cfstoredproc

    - by Travis
    I have an Oracle procedure - editBacklog which I'm calling from a CFM page via cfstoredproc. After several changes to the procedure I started getting ORA-06550: line 1, column 7: PLS-00306: wrong number or types of arguments in call to 'EDITBACKLOG'. I've gotten this before and found that if I changed the name of the procedure it starts working again. I changed the name to editBacklog2 and it worked as I expected it to. I changed the name back to editBacklog and got the same error. I changed the name back to editBacklog2 again and started getting ORA-01003: no statement parsed. NOTHING has changed at this point except for the names. I changed the name yet again to editBacklog3 and it works as expected. As of right now editBacklog = ORA-06550 editBacklog2 = ORA-01003 editBacklog3 = works (kinda) This whole thing started when I was trying to fix an ORA-01821: date format not recognized error. I fear when I start changing things I'll start getting the same lame behavior described above. Either Oracle or CF is messing with me and I'll end up liking one of them less because of it. I assume it's probably cfstoredproc caching metadata or something but neither google, livedocs, or OTN have much to say about my situation. I'm not the SA or DBA. Anyone have any ideas?

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  • Reordering arguments using recursion (pro, cons, alternatives)

    - by polygenelubricants
    I find that I often make a recursive call just to reorder arguments. For example, here's my solution for endOther from codingbat.com: Given two strings, return true if either of the strings appears at the very end of the other string, ignoring upper/lower case differences (in other words, the computation should not be "case sensitive"). Note: str.toLowerCase() returns the lowercase version of a string. public boolean endOther(String a, String b) { return a.length() < b.length() ? endOther(b, a) : a.toLowerCase().endsWith(b.toLowerCase()); } I'm very comfortable with recursions, but I can certainly understand why some perhaps would object to it. There are two obvious alternatives to this recursion technique: Swap a and b traditionally public boolean endOther(String a, String b) { if (a.length() < b.length()) { String t = a; a = b; b = t; } return a.toLowerCase().endsWith(b.toLowerCase()); } Not convenient in a language like Java that doesn't pass by reference Lots of code just to do a simple operation An extra if statement breaks the "flow" Repeat code public boolean endOther(String a, String b) { return (a.length() < b.length()) ? b.toLowerCase().endsWith(a.toLowerCase()) : a.toLowerCase().endsWith(b.toLowerCase()); } Explicit symmetry may be a nice thing (or not?) Bad idea unless the repeated code is very simple ...though in this case you can get rid of the ternary and just || the two expressions So my questions are: Is there a name for these 3 techniques? (Are there more?) Is there a name for what they achieve? (e.g. "parameter normalization", perhaps?) Are there official recommendations on which technique to use (when)? What are other pros/cons that I may have missed?

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  • Rails 1.0 - Using composed_of gives me a wrong number of arguments (1 for 5) error

    - by Tristan Havelick
    I am developing a Rails 1.0 application (I can't upgrade, it's a strange situation) for which I am trying to use the :composed_of functionality. I have a class called StreetAddress: class StreetAddress attr_reader :address, :address2, :city, :state_id, :zip_code def initialize(address, address2, city, state_id, zip_code) @address = address @address2 = address2 @city = city @state_id = state_id @zip_code = zip_code end end and a model class called Hotel class Hotel < ActiveRecord::Base composed_of :street_address # ... end which has columns: "id", "brand_id", "code", "location_name", "address", "address2", "city", "state_id", "zip_code", "phone_number", "phone_ext", "fax_number", "time_zone", "url", "room_service_email", "manager_name", "manager_email" However when I try to access the aggregation I get an error: >> h = Hotel.find(1) => #<Hotel:0x38ad718 @attributes={"fax_number"=>"1-623-420-0124", "city"=>"Twin Falls", "address2"=>"285", "brand_id"=>"1", "code"=>"XZWUXUSZ", "manager_email"= >"[email protected]", "url"=>"http://www.xycdkzolukfvu.hom", "ph one_number"=>"1-805-706-9995", "zip_code"=>"72436", "phone_ext"=>"48060", "id"=> "1", "manager_name"=>"Igor Mcdowell", "room_service_email"=>"Duis.risus@Donecvit ae.ca", "time_zone"=>"America/Boise", "state_id"=>"15", "address"=>"P.O. Box 457 , 7405 Dignissim Avenue", "location_name"=>"penatibus et magnis"}> >> h.street_address ArgumentError: wrong number of arguments (1 for 5) from (eval):3:in `initialize' from (eval):3:in `new' from (eval):3:in `street_address' from (irb):6 Why?

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  • Ruby - calling constructor without arguments & removal of new line characters

    - by Raj
    I am a newbie at Ruby, I have written down a sample program. I dont understand the following: Why constructor without any arguments are not called in Ruby? How do we access the class variable outside the class' definition? Why does it always append newline characters at the end of the string? How do we strip it? Code: class Employee attr_reader :empid attr_writer :empid attr_writer :name def name return @name.upcase end attr_accessor :salary @@employeeCount = 0 def initiaze() @@employeeCount += 1 puts ("Initialize called!") end def getCount return @@employeeCount end end anEmp = Employee.new print ("Enter new employee name: ") anEmp.name = gets() print ("Enter #{anEmp.name}'s employee ID: ") anEmp.empid = gets() print ("Enter salary for #{anEmp.name}: ") anEmp.salary = gets() theEmpName = anEmp.name.split.join("\n") theEmpID = anEmp.empid.split.join("\n") theEmpSalary = anEmp.salary.split.join("\n") anEmp = Employee.new() anEmp = Employee.new() theCount = anEmp.getCount puts ("New employee #{theEmpName} with employee ID #{theEmpID} has been enrolled, welcome to hell! You have been paid as low as $ #{theEmpSalary}") puts ("Total number of employees created = #{theCount}") Output: Enter new employee name: Lionel Messi Enter LIONEL MESSI 's employee ID: 10 Enter salary for LIONEL MESSI : 10000000 New employee LIONEL MESSI with employee ID 10 has been enrolled, welcome to hell! You have been paid as low as $ 10000000 Total number of employees created = 0 Thanks

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  • How to call functions inside a C dll which take pointers as arguments from C#

    - by AndrejaKo
    Hi people, this is my first post here! I'm trying to make a windows forms program using C# which will use a precompiled C library. It will access a smart card and provide output from it. For the library, I have a .dll, .lib and .h and no source. In the .h file there are several structs defined. Most interesting functions of the .dll expect pointers to allocated structs as arguments. I've been calling functions inside the .dll like this: For example function EID_API int WINAPI EidStartup(int nApiVersion); would be called like this [DllImport("CelikApi.dll")]//the name of the .dll public static extern int EidStartup(int nApiVersion); Now my problem is that I can't find equivalent of C's pointers which point to dynamically allocated structures in memory in C#, so I don't know what to pass as argument to functions which take C pointers. I don't have much experience in C#, but to me its use looked as the easiest way of making the program I need. I tried with C++, but Visual Studio 2010 doesn't have IntelliSense for C++/CLR. If you can point me to something better, feel free to do so.

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  • User defined literal arguments are not constexpr?

    - by Pubby
    I'm testing out user defined literals. I want to make _fac return the factorial of the number. Having it call a constexpr function works, however it doesn't let me do it with templates as the compiler complains that the arguments are not and cannot be constexpr. I'm confused by this - aren't literals constant expressions? The 5 in 5_fac is always a literal that can be evaluated during compile time, so why can't I use it as such? First method: constexpr int factorial_function(int x) { return (x > 0) ? x * factorial_function(x - 1) : 1; } constexpr int operator "" _fac(unsigned long long x) { return factorial_function(x); // this works } Second method: template <int N> struct factorial { static const unsigned int value = N * factorial<N - 1>::value; }; template <> struct factorial<0> { static const unsigned int value = 1; }; constexpr int operator "" _fac(unsigned long long x) { return factorial_template<x>::value; // doesn't work - x is not a constexpr }

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  • Using items in a list as arguments

    - by Travis Brown
    Suppose I have a function with the following type signature: g :: a -> a -> a -> b I also have a list of as—let's call it xs—that I know will contain at least three items. I'd like to apply g to the first three items of xs. I know I could define a combinator like the following: ($$$) :: (a -> a -> a -> b) -> [a] -> b f $$$ (x:y:z:_) = f x y z Then I could just use g $$$ xs. This makes $$$ a bit like uncurry, but for a function with three arguments of the same type and a list instead of a tuple. Is there a way to do this idiomatically using standard combinators? Or rather, what's the most idiomatic way to do this in Haskell? I thought trying pointfree on a non-infix version of $$$ might give me some idea of where to start, but the output was an abomination with 10 flips, a handful of heads and tails and aps, and 28 parentheses. (NB: I know this isn't a terribly Haskelly thing to do in the first place, but I've come across a couple of situations where it seems like a reasonable solution, especially when using Parsec. I'll certainly accept "don't ever do this in real code" if that's the best answer, but I'd prefer to see some clever trick involving the ((->) r) monad or whatever.)

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  • C++ Template Class Constructor with Variable Arguments

    - by david
    Is it possible to create a template function that takes a variable number of arguments, for example, in this Vector< T, C class constructor: template < typename T, uint C > Vector< T, C >::Vector( T, ... ) { assert( C > 0 ); va_list arg_list; va_start( arg_list, C ); for( uint i = 0; i < C; i++ ) { m_data[ i ] = va_arg( arg_list, T ); } va_end( arg_list ); } This almost works, but if someone calls Vector< double, 3 ( 1, 1, 1 ), only the first argument has the correct value. I suspect that the first parameter is correct because it is cast to a double during the function call, and that the others are interpreted as ints and then the bits are stuffed into a double. Calling Vector< double, 3 ( 1.0, 1.0, 1.0 ) gives the desired results. Is there a preferred way to do something like this?

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  • Pass arguments to a parameter class object

    - by David R
    This is undoubtedly a simple question. I used to do this before, but it's been around 10 years since I worked in C++ so I can't remember properly and I can't get a simple constructor call working. The idea is that instead of parsing the args in main, main would create an object specifically designed to parse the arguments and return them as required. So: Parameters params = new Parameters(argc, argv) then I can call things like params.getfile() Only problem is I'm getting a complier error in Visual Studio 2008 and I'm sure this is simple, but I think my mind is just too rusty. What I've got so far is really basic: In the main: #include "stdafx.h" #include "Parameters.h" int _tmain(int argc, _TCHAR* argv[]) { Parameters params = new Parameters(argc, argv); return 0; } Then in the Parameters header: #pragma once class Parameters { public: Parameters(int, _TCHAR*[]); ~Parameters(void); }; Finally in the Parameters class: include "Stdafx.h" #include "Parameters.h" Parameters::Parameters(int argc, _TCHAR* argv[]) { } Parameters::~Parameters(void) { } I would appreciate if anyone could see where my ageing mind has missed the really obvious. Thanks in advance.

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  • Attempt to create nested for loops generating missing arguments error

    - by JerryK
    Am attempting to teach myself to program using Tcl. (I want to become more familiar with the language to understand someone else's code - SCID chess) The task i've set myself to motivate my learing of Tcl is to solve the 8 queens problem. My approach to creating a program is to sucessively 'prototype' a solution. So. I'm up to nesting a for loop holding the q pos on row 2 inside the for loop holding the q pos on row 1 Here is my code set allowd 1 set notallowd 0 for {set r1p 1} {$r1p <= 8} {incr r1p } { puts "1st row q placed at $r1p" ;# re-initialize r2 'free for q placemnt' array after every change of r1 q pos: for {set i 1 } {$i <= 8} {incr i} { set r2($i) $allowd } for { set r2($r1p) $notallowd ; set r2([eval $r1p-1]) $notallowd ; set r2([eval $r1p+1]) $notallowd ; set r2p 1} {$r2p <= 8} { incr r2p ;# end of 'next' arg of r2 forloop } ;# commnd arg of r2 forloop placed below: {puts "2nd row q placed at $r2p" } } My problem is that when i run the code the interpreter is aborting with the fatal error: "wrong #args should be for start test next command. I've gone over my code a few times and can't see that i've missed any of the for loop arguments.

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  • How to determine number of function arguments dynamically

    - by Kam
    I have the following code: #include <iostream> #include <functional> class test { public: typedef std::function<bool(int)> Handler; void handler(Handler h){h(5);} }; class test2 { public: template< typename Ret2, typename Ret, typename Class, typename Param> inline Ret2 MemFn(Ret (Class::*f)(Param), int arg_num) { if (arg_num == 1) return std::bind(f, this, std::placeholders::_1); } bool f(int x){ std::cout << x << std::endl; return true;} }; int main() { test t; test2 t2; t.handler(t2.MemFn<test::Handler>(&test2::f, 1)); return 0; } It works as expected. I would like to be able to call this: t.handler(t2.MemFn<test::Handler>(&test2::f)); instead of t.handler(t2.MemFn<test::Handler>(&test2::f, 1)); Basically I need MemFn to determine in runtime what Handler expects as the number of arguments. Is that even possible?

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