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Do HTML WebSockets maintain an open connection for each client? Does this scale?
.../HTML requests. However, that doesn't mean WebSockets is a replacement for all uses of AJAX/HTML.
Each TCP connection in itself consumes very little in terms server resources. Often setting up the connection can be expensive but maintaining an idle connection it is almost free. The first limitation...
Boolean literals in PowerShell
...ional statements. Most non-null objects are true, for example. null, empty strings, empty arrays and the number 0 are false.
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How do I show/hide a UIBarButtonItem?
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Save your button in a strong outlet (let's call it myButton) and do this to add/remove it:
// Get the reference to the current toolbar buttons
NSMutableArray *toolbarButtons = [self.toolbarItems mutableCopy];
// This is how you remove the button from the toolbar and ...
How do I consume the JSON POST data in an Express application
I'm sending the following JSON string to my server.
6 Answers
6
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How to get MD5 sum of a string using python?
In the Flickr API docs , you need to find the MD5 sum of a string to generate the [api_sig] value.
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How do I URl encode something in Node.js?
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The built-in module querystring is what you're looking for:
var querystring = require("querystring");
var result = querystring.stringify({query: "SELECT name FROM user WHERE uid = me()"});
console.log(result);
#prints 'query=SELECT%20name%20FROM%20u...
Linux/Unix command to determine if process is running?
...ux and OS X:
3519 3521 3523 3524
The output of the following is an empty string, making this approach safe for processes that are not running: echo ps cax | grep aasdfasdf | grep -o '^[ ]*[0-9]*'
This approach is suitable for writing a simple empty string test, then even iterating through the dis...
Is there a numpy builtin to reject outliers from a list
...numpy builtin to do something like the following? That is, take a list d and return a list filtered_d with any outlying elements removed based on some assumed distribution of the points in d .
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How to select last two characters of a string
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Try this, note that you don't need to specify the end index in substring.
var characters = member.substr(member.length -2);
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How to change value of process.env.PORT in node.js?
...ode -> simply use a space to use more than one variable on the same command
– p4bloch
Nov 18 '15 at 21:59
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