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Gem::LoadError for mysql2 gem, but it's already in Gemfile
...e with a specific mysql version like below
gem 'mysql2', '~> 0.3.18'
Now stop the server and run bundle
bundle install
Now restart your server. It should work.
rails s
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Combining multiple commits before pushing in Git [duplicate]
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Anyone know if you can have a multiple lined commit msg in your "pick" line, or will it confuse the parser?
– EhevuTov
Oct 9 '14 at 20:44
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How to process POST data in Node.js?
...s.parse(body);
// use post['blah'], etc.
});
}
}
Now, for example, if you have an input field with name age, you could access it using the variable post:
console.log(post.age);
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Should it be “Arrange-Assert-Act-Assert”?
...tly find myself adding a counter-assertion that precedes Act. This way I know that the passing assertion is really passing as the result of the action.
...
Understanding $.proxy() in jQuery
...setTimeout($.proxy(function() {
$(this).addClass('aNewClass'); // Now "this" is again our element
}, this), 1000);
// ---^--------------and tell it that we want our DOM element to be the
// value of "this" in the function
});
So after we gave $.proxy() the f...
How to get the selected radio button’s value?
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That was working for jquery 1.7 but now the correct syntax for jQuery 1.9 is $('input[name="genderS"]:checked').val(); (remove the @)
– jptsetung
Jun 4 '13 at 15:19
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Pandas: drop a level from a multi-level column index?
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As of Pandas 0.24.0, we can now use DataFrame.droplevel():
cols = pd.MultiIndex.from_tuples([("a", "b"), ("a", "c")])
df = pd.DataFrame([[1,2], [3,4]], columns=cols)
df.droplevel(0, axis=1)
# b c
#0 1 2
#1 3 4
This is very useful if you wan...
Empty arrays seem to equal true and false at the same time
...comparison x ==
ToNumber(y).
The result of ToNumber(false) is 0, so we now have:
[] == 0
Again, rule #1 tells us to jump to step #14, but the next step that actually applies is #21:
21. If Type(x) is Object and Type(y) is either String or Number, return the
result of the comparison
To...
What is “lifting” in Haskell?
...rn than a mathematical concept (although I expect someone around here will now refute me by showing how lifts are a category or something).
Typically you have some data type with a parameter. Something like
data Foo a = Foo { ...stuff here ...}
Suppose you find that a lot of uses of Foo take nu...
Plugin execution not covered by lifecycle configuration (JBossas 7 EAR archetype)
...ree with rapt. My POM has no dependency on m2e and I would want to add one now just because I happen to be using Eclipse as my IDE. That is an impost to others working on the same project that may well be using another IDE such as IntelliJ. If m2e needs these hints then it should be part of the m2e...