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Most efficient way to determine if a Lua table is empty (contains no entries)?

... This won't work on a table that as strings as index's – SamHoque Aug 2 '19 at 0:01 add a comment  |  ...
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Hidden Features of SQL Server

... Connection String extras: MultipleActiveResultSets=true; This makes ADO.Net 2.0 and above read multiple, forward-only, read-only results sets on a single database connection, which can improve performance if you're doing a lot of read...
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Clicking the back button twice to exit an activity

... } this.doubleBackToExitPressedOnce = true; Toast.makeText(this, R.string.exit_press_back_twice_message, Toast.LENGTH_SHORT).show(); } And it just works exactly as I want. Including the reset of the state whenever the activity is resumed. ...
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How do I open an old MVC project in Visual Studio 2012 or Visual Studio 2013?

... .csproj : error : The operation could not be completed. Invalid class string I can't find any citations for the real cause of that, but I was able to get VS2012RTM to load the project successfully by changing the <ProjectGuid>. (No idea how this happened - its part of a large solution ...
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Is there a 'foreach' function in Python 3?

...nt: // PHP: foreach ($array as $val) { print($val); } // C# foreach (String val in array) { console.writeline(val); } // Python for val in array: print(val) So, yes, there is a "foreach" in python. It's called "for". What you're describing is an "array map" function. This could be ...
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How can I make Visual Studio wrap lines at 80 characters?

Is there any way to make Visual Studio word-wrap at 80 characters? I'm using VS2008. 10 Answers ...
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Writing unit tests in Python: How do I start? [closed]

...d to work well. Finally, anyone who uses your code doesn't need to install extra packages. – Jeyekomon Jul 6 '18 at 15:04 ...
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#pragma once vs include guards? [duplicate]

...inks, network filesystems, and even name collision --try with a file named string.h or something like that--). Not taking into account speed, you could have a script that substituted any, say, %INCLUDE_GUARD% in a file for an automatically-managed guard symbol; you would write headers as header.hpp....
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Best way to add Activity to an Android project in Eclipse?

... a "changes to be performed" list. In this list you can see manifest file, strings.xml etc already checked. So, unless you uncheck them, it is added automatically – berkuqo Aug 16 '12 at 8:55 ...
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MemoryCache does not obey memory limits in configuration

...s intended, tested out with a generator which fills up cache with loads of strings of 1000 characters. Although, adding up what should be like 100MB to the cache adds up actually 200 - 300MB to the cache, which I found quite strange. Maybe some overheards I'm not counting. – K...