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How to show a dialog to confirm that the user wishes to exit an Android Activity?

... In Android 2.0+ this would look like: @Override public void onBackPressed() { new AlertDialog.Builder(this) .setIcon(android.R.drawable.ic_dialog_alert) .setTitle("Closing Activity") .setMessage("Are you sur...
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get current url in twig template?

...e'), app.request.attributes.get('_route_params')) }} In symfony 2.0, one solution is to write a twig extension for this public function getFunctions() { return array( 'my_router_params' => new \Twig_Function_Method($this, 'routerParams'), ); } /** * Emulating the sym...
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How to reverse a string in Go?

... /* Copyright 2014 Google Inc. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in w...
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Pandas DataFrame column to list [duplicate]

...x=False).split('\n') this will return each row as a string. ['1.0,4', '2.0,5', '3.0,6', ''] Then split each row to get list of list. Each element after splitting is a unicode. We need to convert it required datatype. def f(row_str): row_list = row_str.split(',') return [float(row_list[0]...
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Best practice to mark deprecated code in Ruby?

...on' class MyGem def self.deprecator ActiveSupport::Deprecation.new('2.0', 'MyGem') end def old_method end def new_method end deprecate old_method: :new_method, deprecator: deprecator end MyGem.new.old_method # => DEPRECATION WARNING: old_method is deprecated and will be rem...
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Difference between DateTime and Time in Ruby

... Newer versions of Ruby (2.0+) do not really have significant differences between the two classes. Some libraries will use one or the other for historical reasons, but new code does not necessarily need to be concerned. Picking one for consistency is...
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What is the current state of the art in HTML canvas JavaScript libraries and frameworks? [closed]

...yalty-free web standard for a low-level 3D graphics API based on OpenGL ES 2.0, exposed through the HTML5 Canvas element as Document Object Model interfaces. ... WebGL brings plugin-free 3D to the web, implemented right into the browser. Major browser vendors Apple (Safari), Google (Chrome), Mozill...
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Convert array of strings to List

...seems to be available only in .Net 3.5+ . I'm working with .NET Framework 2.0 on an ASP.NET project that can't be upgraded at this time, so I was wondering: is there another solution? One that is more elegant than looping through the array and adding each element to this List (which is no problem; ...
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Is there a Python function to determine which quarter of the year a date is in?

...ent through the float function to get this to work math.ceil(float(4)/3) = 2.0 while math.ceil(4/3) = 1.0 – Theo Kouzelis Mar 31 '17 at 16:23 1 ...
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throwing an exception in objective-c/cocoa

...tions that may occur in normal operation. Apple's documentation for Obj-C 2.0 states the following: "Important: Exceptions are resource-intensive in Objective-C. You should not use exceptions for general flow-control, or simply to signify errors (such as a file not being accessible)" Apple's conce...