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How to check whether a file or directory exists?
I want to check the existence of file ./conf/app.ini in my Go code,
but I can't find a good way to do that.
5 Answers
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Git clone without .git directory
Is there a flag to pass to git when doing a clone, say don't clone the .git directory? If not, how about a flag to delete the .git directory after the clone?
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Command to change the default home directory of a user
I would like to know whether there is any simple shell command to change the user home directory in Linux/Unix (one similar to chsh which changes the default login shell of an existing valid user) without touching the /etc/passwd file. Thanks
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what is the preferred way to mutate a React state?
Let's say I have a list of plain objects in my this.state.list that I can then use to render a list of children. What then is the right way to insert object into this.state.list ?
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Why do we need message brokers like RabbitMQ over a database like PostgreSQL?
I am new to message brokers like RabbitMQ which we can use to create tasks / message queues for a scheduling system like Celery .
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In ASP.NET, when should I use Session.Clear() rather than Session.Abandon()?
Both Session.Clear() and Session.Abandon() get rid of session variables. As I understand it, Abandon() ends the current session, and causes a new session to be created thus causing the End and Start events to fire.
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What CSS selector can be used to select the first div within another div
I have something like:
4 Answers
4
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Extract a substring from a string in Ruby using a regular expression
How can I extract a substring from within a string in Ruby?
5 Answers
5
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How to get value from form field in django framework?
How do I get values from form fields in the django framework? I want to do this in views, not in templates...
5 Answers
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How does lombok work?
I met lombok today.
I'm very anxious to know how it works.
A Java Geek Article gives some clues but it's not perfectly clear to me:
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