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How to check if a file exists in Go?
... between checking and opening, and anyway you'll need to check the os.Open error regardless. So you simply call os.IsNotExist(err) after you try
to open the file, and deal with its non-existence there (if that requires special handling).
[...] You don't need to check for the paths existing ...
Python locale error: unsupported locale setting
Why do I get the following error when doing this in python:
20 Answers
20
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LINQ with groupby and count
...02/2011 9 | 0
john 2 01/03/2011 0 | 2
jim 3 01/04/2011 1 | 3
jean 1 01/05/2011 3 | 1
jill 2 01/06/2011 5 | 2
jeb 0 01/07/2011 3 | 0
jenn 0 01/08/2011 7 | 0
it would result in the following result after the groupby:
(Group 1): [joe 1 01/01/2011 5, jean 1 01/05/2011 3]
(Group 0): [jane 0 01...
How do I update devDependencies in NPM?
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answered May 13 '15 at 11:05
jmarcelijmarceli
14.8k55 gold badges5353 silver badges5656 bronze badges
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Adding a library/JAR to an Eclipse Android project
...essible to my project at compile time.But when I run the project, I get an error in my console: "Conversion to Dalvik format failed with error 1" .. and my project would not be launched!
– Zeba
Apr 12 '12 at 7:53
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how to prevent “directory already exists error” in a makefile when using mkdir
...y in my makefile and I would like to not get the "directory already exists error" over and over even though I can easily ignore it.
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Maven error: Could not find or load main class org.codehaus.plexus.classworlds.launcher.Launcher
... answered I would like to add that, if you are getting the above mentioned error, be sure that you have downloaded the Binary file.
The source file should only be downloaded if you are an advanced user and that you know how to deal with it.
I have had quite a share of people downloading the wron...
How to solve error “Missing `secret_key_base` for 'production' environment” (Rails 4.1)
...lication it didn't start properly and in the unicorn.log file I found this error message:
app error: Missing `secret_key_base` for 'production' environment, set this value in `config/secrets.yml` (RuntimeError)
After some research I found out that Rails 4.1 changed the way to manage the secret_ke...
How to solve Permission denied (publickey) error when using Git?
... with:
ssh -vT git@github.com
Source: https://help.github.com/articles/error-permission-denied-publickey/
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“Content is not allowed in prolog” when parsing perfectly valid XML on GAE
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This error message is always caused by the invalid XML content in the beginning element. For example, extra small dot “.” in the beginning of XML element.
Any characters before the “<?xml….” will cause above “org.x...