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How can I print a circular structure in a JSON-like format?
...= {};
circ.circ = circ;
// Note: cache should not be re-used by repeated calls to JSON.stringify.
var cache = [];
JSON.stringify(circ, (key, value) => {
if (typeof value === 'object' && value !== null) {
// Duplicate reference found, discard key
if (cache.includes(value)) retur...
Does Typescript support the ?. operator? (And, what's it called?)
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Update: it is supported as of TypeScript 3.7 and called Optional chaining: https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-7.html#optional-chaining
I can't find any reference to it whatsoever in the TypeScript language specification.
As far as what ...
Where is the “Create Unit Tests” selection?
I have installed the new Visual Studio 2012 Ultimate.
9 Answers
9
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How to implement a Map with multiple keys? [duplicate]
...ey mk, Object k) and then a Map<MetaKey, Map<Object, V>> internally.
– Jeremy Huiskamp
May 4 '09 at 22:21
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How to calculate the angle between a line and the horizontal axis?
...2(deltaY, deltaX) * 180 / PI
EDIT (Feb. 22, 2017): In general, however, calling atan2(deltaY,deltaX) just to get the proper angle for cos and sin may be inelegant. In those cases, you can often do the following instead:
Treat (deltaX, deltaY) as a vector.
Normalize that vector to a unit vector. ...
Chrome Developer Tools: How to find out what is overriding a CSS rule?
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what if ALL of them are cancelled? Probably due to a script? How do you find out who did it?
– darkgaze
Jun 23 '17 at 8:28
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Multiline strings in JSON
I'm writing some data files in JSON format and would like to have some really long string values split over multiple lines. Using python's JSON module I get a whole lot of errors, whether I use \ or \n as an escape.
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Does the GitHub traffic graph include your own views?
I have several projects on GitHub, and they all have the traffic graph where I can view how much traffic my repository is getting.
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Automatic creation date for Django model form objects?
What's the best way to set a creation date for an object automatically, and also a field that will record when the object was last updated?
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Changing Ctrl + Tab behavior for moving between documents in Visual Studio
...n Visual Studio 2015 (as well as previous versions of VS, but you must install Productivity Power Tools if you're using VS2013 or below), there are two new commands in Visual Studio:
Window.NextTab and
Window.PreviousTab
Just go remap them from Ctrl+Alt+PageUp/Ctrl+Alt+PageDown to Ctrl+Tab/Ctrl+...