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Why do I need 'b' to encode a string with Base64?

Following this python example , I encode a string as Base64 with: 5 Answers 5 ...
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How to do a scatter plot with empty circles in Python?

In Python, with Matplotlib, how can a scatter plot with empty circles be plotted? The goal is to draw empty circles around some of the colored disks already plotted by scatter() , so as to highlight them, ideally without having to redraw the colored circles. ...
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Which iomanip manipulators are 'sticky'?

I recently had a problem creating a stringstream due to the fact that I incorrectly assumed std::setw() would affect the stringstream for every insertion, until I changed it explicitly. However, it is always unset after the insertion. ...
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What does the Reflect object do in JavaScript?

I saw a blank stub on MDN a while ago for the Reflect object in javascript but I can't for the life of me find anything on Google. Today I found this http://people.mozilla.org/~jorendorff/es6-draft.html#sec-reflect-object and it sounds similar to the Proxy object apart from the realm and loader ...
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Detecting Unsaved Changes

I have a requirement to implement an "Unsaved Changes" prompt in an ASP .Net application. If a user modifies controls on a web form, and attempts to navigate away before saving, a prompt should appear warning them that they have unsaved changes, and give them the option to cancel and stay on the cu...
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don't fail jenkins build if execute shell fails

As part of my build process, I am running a git commit as an execute shell step. However, if there are no changes in the workspace, Jenkins is failing the build. This is because git is returning an error code when there are no changes to commit. I'd like to either abort the build, or just mark it ...
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Why C# fails to compare two object types with each other but VB doesn't?

I have two objects in C# and don't know if it's Boolean or any other type. However when I try to compare those C# fails to give the right answer. I have tried the same code with VB.NET and that did it ! ...
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Performance of foreach, array_map with lambda and array_map with static function

What's the performance difference (if there is any) between these three approaches, both used to transform an array to another array? ...
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Is there any way to prevent input type=“number” getting negative values?

I want to get only positive values, is there any way to prevent it using only html Please don't suggest validation method ...
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ASP.NET Identity's default Password Hasher - How does it work and is it secure?

I am wondering wether the Password Hasher that is default implemented in the UserManager that comes with MVC 5 and ASP.NET Identity Framework, is secure enough? And if so, if you could explain to me how it works? ...