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Creating JS object with Object.create(null)?

...= Object.prototype while Object.create(null) doesn't inherit from anything and thus has no properties at all. In other words: A javascript object inherits from Object by default, unless you explicitly create it with null as its prototype, like: Object.create(null). {} would instead be equivalent t...
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Stop “developer tools access needs to take control of another process for debugging to continue” ale

I recently upgraded to 10.7.3, and when I try to debug my iOS project in the simulator for the first time after logging in, I'm prompted with the following two alerts: ...
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Using node.js as a simple web server

...pm install http-server -g Now you can run a server via the following commands: $ cd MyApp $ http-server If you're using NPM 5.2.0 or newer, you can use http-server without installing it with npx. This isn't recommended for use in production but is a great way to quickly get a server running ...
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How do I find the duplicates in a list and create another list with them?

How can I find the duplicates in a Python list and create another list of the duplicates? The list only contains integers. ...
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text-overflow:ellipsis in Firefox 4? (and FF5)

...TextBox').val().length > limit) { // -4 to include the ellipsis size and also since it is an index var trimmedText = $('#limitedWidthTextBox').val().substring(0, limit - 4); trimmedText += ellipsis; $('#limitedWidthTextBox').val(trimmedText); } I understand that there should be som...
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Sort points in clockwise order?

...e other. Using it you can construct a less-than relation to compare points and determine the order in which they should appear in the sorted array. But you have to define where is the beginning of that order, I mean what angle will be the starting one (e.g. the positive half of x-axis). The code fo...
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Can't pickle when using multiprocessing Pool.map()

... is that multiprocessing must pickle things to sling them among processes, and bound methods are not picklable. The workaround (whether you consider it "easy" or not;-) is to add the infrastructure to your program to allow such methods to be pickled, registering it with the copy_reg standard librar...
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Build tree array from flat array in javascript

I have a complex json file that I have to handle with javascript to make it hierarchical, in order to later build a tree. Every entry of the json has : id : a unique id, parentId : the id of the parent node (which is 0 if the node is a root of the tree) level : the level of depth in the tree ...
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How do I change permissions for a folder and all of its subfolders and files in one step in Linux?

I would like to change permissions of a folder and all its sub folders and files in one step (command) in Linux. 16 Answers...
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Make Bootstrap Popover Appear/Disappear on Hover instead of Click

I'm building a website with Bootstrap's Popover and I can't figure out how to make the popover appear on hover instead of click. ...