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Why is it Valid to Concatenate Null Strings but not to Call “null.ToString()”?
... ToString returns null, an empty string is substituted.
The reason of the error in second is:
null (C# Reference) - The null keyword is a literal that represents a null reference, one that does not refer to any object. null is the default value of reference-type variables.
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Pass entire form as data in jQuery Ajax function
... else
$("#feedback").text(" Some Error has occured Errror !!! ID duplicate");
}
});
});
});
</script>
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How can I redirect HTTP requests made from an iPad?
... This pointed me in the right direction. Initially, I got an error message "No protocol handler was valid for the URL". I found I had to load both proxy_module and proxy_http_module to get it to work. Thanks!
– Hobo
Apr 30 '12 at 11:54
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“CAUTION: provisional headers are shown” in Chrome debugger
...e doesn't like SSL requests to unconventional SSL ports, but perhaps their error message could be more specific.
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What is the difference between and ? [duplicate]
...page so something like
<%
int i = 0;
%>
would generate a compiler error (since the same variable can't be declared more than once).
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Faye vs. Socket.IO (and Juggernaut)
...f an XHR request affects how its content is interpreted.
For some types of error handling I need direct access to the transport, for example resending messages when a client reconnects after a Node WebSocket dies.
Please correct me if I've got any of this wrong - this is based on a cursory scan of t...
how to File.listFiles in alphabetical order?
... }
}
} catch (Exception ex) {
logger.error(ex);
ex.printStackTrace();
}
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How to check for a valid Base64 encoded string
...ase 64 encoded other than just trying to convert it and see if there is an error? I have code code like this:
19 Answers
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How to kill a child process after a given timeout in Bash?
...e same process ID (although it's probably impossible to avoid this kind of error completely).
run_with_timeout ()
{
t=$1
shift
echo "running \"$*\" with timeout $t"
(
# first, run process in background
(exec sh -c "$*") &
pid=$!
echo $pid
# the timeout shell
(sleep $t ; e...
On localhost, how do I pick a free port number?
... using a single hard-coded port for your listener, as long as you print an error message if the bind fails.
Note also that most of your sockets (for the slaves) do not need to be explicitly bound to specific port numbers - only sockets that wait for incoming connections (like your master here) will...