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What is the difference between UTF-8 and ISO-8859-1?
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UTF-8 is a multibyte encoding that can represent any Unicode character. ISO 8859-1 is a single-b...
Difference between rake db:migrate db:reset and db:schema:load
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db:migrate runs (single) migrations that have not run yet.
db:create creates the database
db:d...
Convert data.frame columns from factors to characters
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edited May 23 '17 at 12:18
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answered May 17 '10 at 17:21
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How to change a nullable column to not nullable in a Rails migration?
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If you do it in a migration then you could probably do it like this:
# Make sure no null valu...
Are nested try/except blocks in python a good programming practice?
...") from None
PS. has_key() has been deprecated for a long time in Python 2. Use item in self.dict instead.
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Creating Multifield Indexes in Mongoose / MongoDB
...For your case it would be something like:
mySchema.index({field1: 1, field2: 1}, {unique: true});
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Can we set a Git default to fetch all tags during a remote pull?
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answered May 21 '13 at 19:50
joshtklingjoshtkling
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What exactly does git's “rebase --preserve-merges” do (and why?)
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Adding up BigDecimals using Streams
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3.1. We supply an identity value for addition, namely BigDecimal.ZERO.
3.2. We specify the BinaryOperator<BigDecimal>, which adds two BigDecimal's, via a method reference BigDecimal::add.
Updated answer, after edit
I see that you have added new data, therefore the new answer will become:
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