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What is the purpose and use of **kwargs?

...Swim(where, why) elif what == 'walk': doWalk(where, why) ... Now you get a new method "drive": elif what == 'drive': doDrive(where, why, vehicle) But wait a minute, there is a new parameter "vehicle" -- you did not know it before. Now you must add it to the signature of the myDo-...
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Converting strings to floats in a DataFrame

... NOTE: pd.convert_objects has now been deprecated. You should use pd.Series.astype(float) or pd.to_numeric as described in other answers. This is available in 0.11. Forces conversion (or set's to nan) This will work even when astype will fail; its als...
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Recommended way of making React component/div draggable

...nd could probably even wrap it in a nice closure interface, but I want to know if there's a way that meshes with React better. ...
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Pass correct “this” context to setTimeout callback?

...ause it wasn't yet widely supported and you needed polyfills to use it but now it's everywhere: if (this.options.destroyOnHide) { setTimeout(function(){ this.tip.destroy() }.bind(this), 1000); } The bind function creates a new function with the this value pre-filled. Now in modern JS, this ...
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Safely turning a JSON string into an object

... The jQuery method is now deprecated. Use this method instead: let jsonObject = JSON.parse(jsonString); Original answer using deprecated jQuery functionality: If you're using jQuery just use: jQuery.parseJSON( jsonString ); It's exactly w...
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What does @synchronized() do as a singleton method in objective C?

I just created a singleton method, and I would like to know what the function @synchronized() does, as I use it frequently, but do not know the meaning. ...
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Git submodule push

...e code in submodule-config in a similar way to fetch. The git config doc now include: push.recurseSubmodules: Make sure all submodule commits used by the revisions to be pushed are available on a remote-tracking branch. If the value is 'check', then Git will verify that all submo...
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Const in JavaScript: when to use it and is it necessary?

...eginning of 2014 and a lot has changed since then. ecmascript-6 support is now the norm. All modern browsers now support const so it should be pretty safe to use without any problems. Original Answer from 2014 Despite having fairly decent browser support, I'd avoid using it for now. From MDN's a...
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resizes wrong; appears to have unremovable `min-width: min-content`

... has the style min-width: -webkit-min-content;, just as I hypothesized. So now I only need to solve the problem in Firefox and possibly other browsers I haven’t tested in yet. – Rory O'Kane Jul 24 '13 at 1:42 ...
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Mocking python function based on input arguments

...r easier, could you rename the side_effect function to something else? (i know, i know, it is pretty simple, but improves readability the fact that function name and param name are different :) – Juan Antonio Gomez Moriano Apr 23 '13 at 6:21 ...