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Xcode: Build Failed, but no error messages
... be something related to code signing if you are able to build and run the app, but not Archive. Further googling of your error message should resolve that now that it has been revealed.
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Rails: select unique values from a column
...el.uniq.pluck(:rating)
# rails 5+
Model.distinct.pluck(:rating)
Update
Apparently, as of rails 5.0.0.1, it works only on "top level" queries, like above. Doesn't work on collection proxies ("has_many" relations, for example).
Address.distinct.pluck(:city) # => ['Moscow']
user.addresses.disti...
Ruby off the rails
...e way that is usually easy enough for a business analyst to use. Many Ruby apps outside of web development exist for this purpose.
I highly recommend Googling "ruby dsl" for some excellent reading, but I would like to leave you with one post in particular. Russ Olsen wrote a two part blog post on ...
Use rvmrc or ruby-version file to set a project gemset with RVM?
...uby-version).
For example, if you have a simple .rvmrc:
rvm use 1.9.3@my-app
It can be transformed to .ruby-version:
1.9.3
And .ruby-gemset:
my-app
Be sure to remove the .rvmrc file as it takes precedence over any other project configuration files:
rm .rvmrc
...
How to activate virtualenv?
... the flask project directory and under microblog directory there should be app and venv folders. then run the below command, This is one worked for me in Ubuntu.
source venv/bin/activate
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Disable cross domain web security in Firefox
... Works for me! I allowed CORS for localhost and now I can test my web apps and APIs locally without setting up complicated servers. Thank you!
– Arthur Khazbs
Jun 8 at 14:46
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PostgreSQL query to list all table names?
...iving just \dt in psql? See https://www.postgresql.org/docs/current/static/app-psql.html.
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Avoid Android Lint complains about not-translated string
...
There are 3 ways that I know of :
To apply the modification value by value : Set the attribute translatable="false" on the <string> definition:
<string name="account_setup_imap" translatable="false">IMAP</string>
If you have a lot of resourc...
Git 'fatal: Unable to write new index file'
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It happened to me that the file .git/index was in use by another process (my local development web server). I shut down the process and then it worked.
s...
Script not served by static file handler on IIS7.5
I've just tried to deploy my first web application to IIS on my Windows 7 Home Premium notebook. After creating the application, I had to change to the Classic App Pool, then set that pool for framework 4.0. Now I get the following error:
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