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  • How to pass arguments to Go program?

    - by oraz
    I can't see arguments for main() in package main. How to pass arguments from command line in Go? A complete program, possibly created by linking multiple packages, must have one package called main, with a function func main() { ... } defined. The function main.main() takes no arguments and returns no value.

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  • PHP regular expression for positive number with 0 or 2 decimal places

    - by Peter
    Hi I am trying to use the following regular expression to check whether a string is a positive number with either zero decimal places, or 2: ^\d+(\.(\d{2}))?$ When I try to match this using preg_match, I get the error: Warning: preg_match(): No ending delimiter '^' found in /Library/WebServer/Documents/lib/forms.php on line 862 What am I doing wrong?

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  • intiating lists in the constructor's initialization list

    - by bks
    i just moved from C to C++, and now work with lists. i have a class called "message", and i need to have a class called "line", which should have a list of messages in its properties. as i learned, the object's properties should be initialized in the constructor's initialization list, and i had the "urge" to initialize the messages list in addition to the rest of the properties (some strings and doubles). is that "urge" justified? does the list need to be initialized? thank you in advance

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  • Connecting form to database errors

    - by Russell Ehrnsberger
    Hello I am trying to connect a page to a MySQL database for newsletter signup. I have the database with 3 fields, id, name, email. The database is named newsletter and the table is named newsletter. Everything seems to be fine but I am getting this error Notice: Undefined index: Name in C:\wamp\www\insert.php on line 12 Notice: Undefined index: Name in C:\wamp\www\insert.php on line 13 Here is my form code. <form action="insert.php" method="post"> <input type="text" value="Name" name="Name" id="Name" class="txtfield" onblur="javascript:if(this.value==''){this.value=this.defaultValue;}" onfocus="javascript:if(this.value==this.defaultValue){this.value='';}" /> <input type="text" value="Enter Email Address" name="Email" id="Email" class="txtfield" onblur="javascript:if(this.value==''){this.value=this.defaultValue;}" onfocus="javascript:if(this.value==this.defaultValue){this.value='';}" /> <input type="submit" value="" class="button" /> </form> Here is my insert.php file. <?php $host="localhost"; // Host name $username="root"; // Mysql username $password=""; // Mysql password $db_name="newsletter"; // Database name $tbl_name="newsletter"; // Table name // Connect to server and select database. mysql_connect("$host", "$username", "$password")or die("cannot connect"); mysql_select_db("$db_name")or die("cannot select DB"); // Get values from form $name=$_POST['Name']; $email=$_POST['Email']; // Insert data into mysql $sql="INSERT INTO $tbl_name(name, email)VALUES('$name', '$email')"; $result=mysql_query($sql); // if successfully insert data into database, displays message "Successful". if($result){ echo "Successful"; echo "<BR>"; echo "<a href='index.html'>Back to main page</a>"; } else { echo "ERROR"; } ?> <?php // close connection mysql_close(); ?>

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  • Javascript error in rails app (locally run)

    - by tesmar
    Hi, I am trying to move a development environment from production to my local machine (Ubuntu), and when I get the code up and running on my box, the site works in rails but I get this JS error: Permission denied for http://ad.doubleclick.net to call method Location.toString on http://localhost:3000. Line 0 Do you have any idea how to fix JS problems, or should I disable the ads in development?

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  • What web servers use `COOKIE` instead of `HTTP_COOKIE`?

    - by Smack my batch up
    In the source code of the Perl module CGI.pm, in the submodule CGI::Cookies.pm, there is the following line: $raw_cookie = $ENV{HTTP_COOKIE} || $ENV{COOKIE}; I'm interested in $ENV{COOKIE} here. Are there any web servers (obsolete or otherwise) which transmit cookie information using the COOKIE environment variable instead of the HTTP_COOKIE used by Apache? I've never seen COOKIE and other CGI libraries don't seem to support it.

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  • Batch file command PAUSE does not work

    - by Samaursa
    I am creating a simple batch file to assist in a few things, and I have some instructions that it prints out as well that I want the user to see before exit. Currently, the window closes very quickly. So I added PAUSE at the end of the file, but it does not want to work. I looked at other questions on SO and have checked to make sure the line endings are CRLF and that I have CRLF at the end of the file. Any suggestions?

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  • How to unit test private methods in BDD / TDD?

    - by robert_d
    I am trying to program according to Behavior Driven Development, which states that no line of code should be written without writing failing unit test first. My question is, how to use BDD with private methods? How can I unit test private methods? Is there better solution than: - making private methods public first and then making them private when I write public method that uses those private methods; or - in C# making all private methods internal and using InternalsVisibleTo attribute. Robert

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  • How to properly encode "[" and "]" in queries using Apache HttpClient?

    - by Jason Nichols
    I've got a GET method that looks like the following: GetMethod method = new GetMethod("http://host/path/?key=[\"item\",\"item\"]"); Such a path works just fine when typed directly into a browser, but the above line when run causes an IllegalArgumentException : Invalid URI. I've looked at using the URIUtils class, but without success. Is there a way to automatically encode this (or to add a query string onto the URL without causing HttpClient to barf?).

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  • c++, object life-time of anonymous (unnamed) variables

    - by Joe Steeve
    In the following code, the object constructed in the last line of 'main()', seems to be destroyed before the end of the expression. The destructor is called before the '<<' is executed. Is this how it is supposed to be? #include <string> #include <sstream> #include <iostream> using std::string; using std::ostringstream; using std::cout; class A : public ostringstream { public: A () {} virtual ~A () { string s; s = str(); cout << "from A: " << s << std::endl; } }; int main () { string s = "Hello"; A os; os << s; cout << os.str() << std::endl; A() << "checking this"; } This is the output: Hello from A: 0x80495f7 from A: Hello This is the gdb log: (gdb) b os.cxx : 18 Breakpoint 1 at 0x80492b1: file os.cxx, line 18. (2 locations) (gdb) r Starting program: /home/joe/sandbox/test/os Hello Breakpoint 1, ~A (this=0xbffff37c, __in_chrg=<value optimized out>, __vtt_parm=<value optimized out>) at os.cxx:18 18 cout << "from A: " << s << std::endl; (gdb) p s.c_str () $1 = 0x804b45c "0x80495f7" (gdb) p *s.c_str () $2 = 48 '0' (gdb) c Continuing. from A: 0x80495f7 Breakpoint 1, ~A (this=0xbffff2bc, __in_chrg=<value optimized out>, __vtt_parm=<value optimized out>) at os.cxx:18 18 cout << "from A: " << s << std::endl; (gdb) p s.c_str () $3 = 0x804b244 "Hello" (gdb) p *s.c_str () $4 = 72 'H' (gdb) c Continuing. from A: Hello Program exited normally. (gdb)

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  • BackgroundWorker Thread in IIS7 - FAIL!

    - by Darren Oster
    Just wondering if anyone has had any trouble using a BackgroundWorker Thread in a site running under IIS 7 in Integrated Pipeline mode? I am trying to use such a beast to update the database schema (admin function, obviously), and it works perfectly in Cassini, but when I deploy to IIS 7, the thread gets about one line of code in and silently ends. Is there a way to tell why a thread ended? Thanks in advance.

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  • Why is the order of evaluation for function parameters undefined in c++?

    - by kunj2aan
    The standard doesn't specify the order of evaluation of arguments with this line: The order of evaluation of arguments is unspecified. What does Better code can be generated in the absence of restrictions on expression evaluation order imply? What is the drawback in asking all the compilers to evaluate the function arguments Left to Right for example? What kinds of optimizations do compilers perform because of this undefined spec?

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  • HttpWebRequest.UserAgent : What does it do

    - by BDotA
    I read this MSDN like about it and ran its example. when I change the uSerAgnet to something like "blah", the output is wrong but when I use the same thing that is in the example of even when I comment out the line of code that is setting the UserASgent, the output is correct. what is UserAgent at all ? when should I set it ? How to know to what value should I set it ? thanks

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  • Starting python debugger automatically on error

    - by jeremy
    This is a question I have wondered about for quite some time, yet I have never found a suitable solution. If I run a script and I come across, let's say an IndexError, python prints the line, location and quick description of the error and exits. Is it possible to automatically start pdb when an error is encountered? I am not against having an extra import statement at the top of the file, nor a few extra lines of code.

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  • runModalForWindow throttles http requests

    - by Nikita Rybak
    I have url connection, which normally works fine NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:delegate]; But when I create a modal window, no request ever receives response: [NSApp runModalForWindow:window]; If I comment this line out, thus creating a 'standard' window, everything works. I tried implementing all methods from NSURLConnectionDelegate, not a single of them called. I suspect this is something about 'run loops', but have little experience in this area. Does anybody have experience in this? Thank you

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  • JavaScript: Rounding to two decimal places. Not less than two

    - by Abs
    Hello all, I have this line of code which rounds my numbers to 2 decimal places. But the thing is I get numbers like this. 10.8, 2.4 etc. These are not my idea of 2 decimal places so how I can improve this: Math.round(price*Math.pow(10,2))/Math.pow(10,2); I want numbers like 10.80, 2.40 etc. Use of JQuery is fine with me. Thanks for any help.

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  • Problem with the POSIX module

    - by planetp
    After moving my mod_perl site from Linux hosting to FreeBSD, I have this error in the logfile: Your vendor has not defined POSIX macro SIGRTMIN, used at ../../lib/POSIX.pm (autosplit into ../../lib/auto/POSIX/SigRt/_init.al) line 993\n The script just imports POSIX and utilizes some functions (ceil, etc) How can I solve this issue ?

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  • xml error: Object reference not set to an instance of an object after SelectSingleNode

    - by every_answer_gets_a_point
    here's my code: XmlDocument doc = new XmlDocument(); foreach (string c in colorList) { doc.Load(@"http://whoisxmlapi.com/whoisserver/WhoisService?domainName=" + c + @"&username=user&password=pass"); textBox1.Text += doc.SelectSingleNode("WhoisRecord/registrant/email").InnerText + ","; } for the second line of code (textbox1...) is generating this error what am i doing wrong?

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