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Changing the current working directory in Java?

How can I change the current working directory from within a Java program? Everything I've been able to find about the issue claims that you simply can't do it, but I can't believe that that's really the case. ...
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What is the lifetime of a static variable in a C++ function?

... scope it is only initialized once and retains its value between function calls. What exactly is its lifetime? When do its constructor and destructor get called? ...
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NPM cannot install dependencies - Attempt to unlock something which hasn't been locked

I've been trying to run an npm install on my package.json file, but I'm having a lot of trouble. It keeps saying "Error: Attempt to unlock XXX, which hasn't been locked" on all my dependences. Here's one of them: ...
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How to solve error “Missing `secret_key_base` for 'production' environment” (Rails 4.1)

...and Enter for save and exit in vi. But if you login as normal user, let's call it "example_user" for this gist, you will need to find one of these other files: $ vi ~/.bash_profile $ vi ~/.bash_login $ vi ~/.profile These files are in order of importance, which means that if you have the first fi...
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Can I disable autolayout for a specific subview at runtime?

I have a view that needs to have its frame manipulated programmatically - it's a kind of document view that wraps to its content which is then scrolled and zoomed around a superview by manipulating the frame origin. Autolayout fights with this at runtime. ...
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How did Google manage to do this? Slide ActionBar in Android application

I really want to implement this (the side navigation) in an app of my own, does anyone know how Google managed to do this? ...
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Find most frequent value in SQL column

... SELECT `column`, COUNT(`column`) AS `value_occurrence` FROM `my_table` GROUP BY `column` ORDER BY `value_occurrence` DESC LIMIT 1; Replace column and my_table. Increase 1 if you want to see the N most common values of the column. ...
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LEN function not including trailing spaces in SQL Server

... This is the best, elegant solution so far. I don't really care if it FEELS like a hack or not (coding is not about feelings), I'm really care about the fact that this solution has no side effects. I can change data type varchar/nvarchar and it still works. Good job. ...
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How to scp in Python?

What's the most pythonic way to scp a file in Python? The only route I'm aware of is 14 Answers ...
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Binding a WPF ComboBox to a custom list

...0"> <Grid> <StackPanel> <Button Click="Button_Click">asdf</Button> <ComboBox ItemsSource="{Binding Path=PhonebookEntries}" DisplayMemberPath="Name" SelectedValuePath="Name" SelectedValue="{Binding...