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Creating range in JavaScript - strange syntax
...d topics in javascript, so this will be more-than-rather long. We'll start from the top. Buckle up!
1. Why not just Array(5).map?
What's an array, really? A regular object, containing integer keys, which map to values. It has other special features, for instance the magical length variable, but at...
What is the command to exit a Console application in C#?
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Several options, by order of most appropriate way:
Return an int from the Program.Main method
Throw an exception and don't handle it anywhere (use for unexpected error situations)
To force termination elsewhere, System.Environment.Exit (not portable! see below)
Edited 9/2013 to improve r...
How can I recall the argument of the previous bash command?
... to access previous commands.
Other useful commands:
!$ - last argument from previous command
!^ - first argument (after the program/built-in/script) from previous command
!! - previous command (often pronounced "bang bang")
!n - command number n from history
!pattern - most recent command matchi...
MVC (Laravel) where to add logic
...r update the vote count of a post? What if you need to send the same email from another place in your code? Do you create a static method? What if that emails needs information from another model?
I think the model should represent an entity. With Laravel, I only use the model class to add things l...
Express.js: how to get remote client address
...note: This can return a comma separated list of IP addresses. We had a bug from a dev copying this and comparing the result to an IP. Perhaps do something like var ip = (req.headers['x-forwarded-for'] || req.connection.remoteAddress || '').split(',')[0].trim(); to get client IP.
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Subscripts in plots in R
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How to load "2" from the variable? I have a loop and need to plot x_[1] x_[2] x_[3] ...
– 0x2207
Dec 11 '14 at 11:38
6
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In Java, are enum types inside a class static?
I can't seem to access instance members of the surrounding class from inside an enum, as I could from inside an inner class. Does that mean enums are static? Is there any access to the scope of the surrounding class's instance, or do I have to pass the instance into the enum's method where I need it...
I want to delete all bin and obj folders to force all projects to rebuild everything
... "%%G was unexpected at this time" - this happens when you run it from the command line instead from inside a batch file. Use single '%'s in this case.
– Designpattern
Jan 11 '12 at 9:05
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What’s the difference between “Array()” and “[]” while declaring a JavaScript array?
...mance increase when using new Array() because you can prevent the overflow from happening.
As pointed out in this answer, new Array(5) will not actually add five undefined items to the array. It simply adds space for five items. Be aware that using Array this way makes it difficult to rely on array...
What is the use of ByteBuffer in Java? [closed]
...s;
Relative bulk get methods that transfer contiguous sequences of bytes from this buffer into an array;
Relative bulk put methods that transfer contiguous sequences of bytes from a byte array or some other byte buffer into this buffer;
Absolute and relative get and put methods that read and w...