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Reconnection of Client when server reboots in WebSocket
...y it is available "everywhere"):
var timerID=0;
var socket;
/* Initiate what has to be done */
socket.onopen=function(event){
/* As what was before */
if(window.timerID){ /* a setInterval has been fired */
window.clearInterval(window.timerID);
window.timerID=0;
}
/* ... */
}
socket.on...
How to calculate the SVG Path for an arc (of a circle)
...zation" (the one they chose), and "center parameterization" (which is like what the question uses). In the description of "endpoint parameterization" they say:
One of the advantages of endpoint parameterization is that it permits a consistent path syntax in which all path commands end in the coo...
How to use string.replace() in python 3.x
The string.replace() is deprecated on python 3.x. What is the new way of doing this?
8 Answers
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How to integrate nodeJS + Socket.IO and PHP?
...I won't talk about PHP code, it is really simple and not interesting here; what I want to show you is how to integrate your nodeJS code.
I use express and Socket.IO, so be sure to install those modules with npm. Then, we create a simple nodeJS server:
var socket = require( 'socket.io' );
var expr...
Reading output of a command into an array in Bash
...
$ declare -p my_array
declare -a my_array='([0]="* one two" [1]="t")'
$ # What?
That's because I have a file called t in the current directory… and this filename is matched by the glob [three four]… at this point some people would recommend using set -f to disable globbing: but look at it: yo...
How to get the jQuery $.ajax error response text?
...
This is what worked for me
function showErrorMessage(xhr, status, error) {
if (xhr.responseText != "") {
var jsonResponseText = $.parseJSON(xhr.responseText);
var jsonResponseStatus = '';
...
How do I tell git-svn about a remote branch created after I fetched the repo?
...ng gitk --all open the whole time and refreshing it often to keep track of what you're doing. I'm still sort of new to git and git svn so please suggest improvements to this method.
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Why do we check up to the square root of a prime number to determine if it is prime?
...f you could not find any divisor of N belonging in the range [2, sqrt(N)], what does that mean?
This means that N does not have any divisor in [2, a] as a <= sqrt(N).
Therefore, a = 1 and b = n and hence By definition, N is prime.
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Further reading if you are not satisfied:
Many different...
Hidden Features of JavaScript? [closed]
What "Hidden Features" of JavaScript do you think every programmer should know?
99 Answers
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“R cannot be resolved to a variable”? [duplicate]
...ource and now it shows errors - "R cannot be resolved to a variable". From what I found here, I had cleared and rebuilt the project, but still the R file doesn't appear in the /gen folder.
...