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What is process.env.PORT in Node.js?
...set('port', ...), and that makes your server be able to accept a parameter from the environment what port to listen on.
If you pass 3000 hard-coded to app.listen(), you're always listening on port 3000, which might be just for you, or not, depending on your requirements and the requirements of the ...
error: request for member '..' in '..' which is of non-class type
... have mandated "void" parameter so that this usage would have been allowed from consistency point of view. If I am not mistaken, K&R C had mandatory usage of term void.
– Rajesh
Jan 22 '18 at 5:08
...
How to loop through array in jQuery?
...ffers a contained-scope variable (or constant, in the above) for the entry from the array.
Disadvantages: Not supported in any version of IE.
jQuery.each:
jQuery.each(substr, function(index, item) {
// do something with `item` (or `this` is also `item` if you like)
});
(Link to docs)
Advan...
How to copy a local Git branch to a remote repo
...acks being uploaded. It looks like the remote already has all the material from your earlier push; it just has to be hooked in to the refs.
– Kaz
Mar 23 '12 at 2:25
...
Are there strongly-typed collections in Objective-C?
...t;() //Error: Cannot specialize non-generic type 'GenericsTest'
Aside from than these Foundation collection classes, Objective-C lightweight generics are ignored by Swift. Any other types using lightweight generics are imported into Swift as if they were unparameterized.
Interacting with Obje...
How do you add CSS with Javascript?
...
sheet comes from sheet = window.document.styleSheets[0] (you have to have at least one <style type="text/css"></style> there).
– AJP
Dec 3 '13 at 11:51
...
Android accelerometer accuracy (Inertial navigation)
... API yet, so bear with me.
First of all, traditionally, to get navigation from accelerometers you would need a 6-axis accelerometer. You need accelerations in X, Y, and Z, but also rotations Xr, Yr, and Zr. Without the rotation data, you don't have enough data to establish a vector unless you assum...
Adding two numbers concatenates them instead of calculating the sum
...hey are actually strings, not numbers. The easiest way to produce a number from a string is to prepend it with +:
var x = +y + +z;
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How to reverse a string in Go?
...orks on string by enumerating unicode characters
string can be constructed from int slices where each element is a unicode character.
So here it goes:
func reverse(s string) string {
o := make([]int, utf8.RuneCountInString(s));
i := len(o);
for _, c := range s {
i--;
o...
What is the difference between 'classic' and 'integrated' pipeline mode in IIS7?
...e out the request to ASP.NET). In this mode, ASP.NET is not much different from PHP or other technologies for IIS.
Integrated mode, on the other hand, is a new mode in IIS7 where IIS pipeline is tightly integrated (i.e. is just the same) as ASP.NET request pipeline. ASP.NET can see every request it...