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Why is $$ returning the same id as the parent process?

... "parent" is a bit misleading (at least it was to me), it's actually the "top level" shell. For instance : echo $$; (echo $$; (echo $$)) echoes the same pid three times – Martin Bouladour Jul 20 '17 at 9:59 ...
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String replacement in batch file

...TO:EOF And remember you MUST add "SETLOCAL ENABLEDELAYEDEXPANSION" to the top of your batch file or else none of this will work properly. SETLOCAL ENABLEDELAYEDEXPANSION @REM # Remember to add this to the top of your batch file. ...
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How to change package name of an Android Application

... i found the file package names declared at the top of each file to not to match the new package, nor the folder they are in. you can right click that source folder that still has the old package name (at least mine always does), select 'refactor' then 'rename' and rename ...
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Add a common Legend for combined ggplots

...et it right away so thought I'd comment. If you want the common legend on top of the plot (rather than below), all you need to do is switch the arguments. In the above example, mylegend goes before arrangeGrob(). You also need to reverse the heights (i.e. heights=c(1,10) – ljh...
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Get file size, image width and height before upload

...xplicitly setting the re-sized image type to jpeg. If you right click the top image, in the canvas tag, and choose Save File As, it will default to a PNG format. If you right click, and Save File as the lower image, it will default to a JPEG format. Any file over 400px in width is reduced to 400p...
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Different ways of adding to Dictionary

... Don't really have a source as such, just off the top of my head, but i don't think there's much more to it, than mentioned in the other comments. If i remember correctly, Add simply uses the indexer, but checks first to see if the Key is already in use. ...
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upstream sent too big header while reading response header from upstream

... running as a reverse proxy (which I think is the default). So the current top answer doesn't work as nginx is also being run as a proxy. I went to Subscriptions | [subscription domain] | Websites & Domains (tab) | [Virtual Host domain] | Web Server Settings. Then at the bottom of that page y...
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UITableView with fixed section headers

...he default behaviour of UITableView is to pin section header rows to the top of the table as you scroll through the sections until the next section pushes the previos section row out of view. ...
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Access to Modified Closure (2)

... MessageBox.Show(form, name); }; btn.Dock = DockStyle.Top; form.Controls.Add(btn); } Application.Run(form); } Run the above prior to C# 5, and although each button shows a different name, clicking the buttons shows "Wilma" four times. This is because the langu...
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Android buildscript repositories: jcenter VS mavencentral

...move to JCenter was a logic next step. JCenter itself is a thin veneer on top of Maven Central. It proxies it (more or less successfully) and adds additional components. Both are hosted on CDN networks and highly performant. Maven Central itself is the target for all Eclipse, Apache and most other ...