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ValueError: math domain error
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ValueError: math domain error
Without knowing what your newtonRaphson2 function does, I'm not sure I can guess where the invalid x[2] value is coming from, but hopefully this will lead you on the right track.
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Increment a value in Postgres
...tgres table and increment it by one. For example if the table 'totals' had 2 columns, 'name' and 'total', and Bill had a total of 203, what would be the SQL statement I'd use in order to move Bill's total to 204?
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How to change the default font size in ggplot2
...like to know if it is possible to change some default parameters of ggplot2 graphics, like font size for instance, for a whole R session. The idea is to avoid setting them for each plot.
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Create a variable name with “paste” in R?
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You can use assign (doc) to change the value of perf.a1:
> assign(paste("perf.a", "1", sep=...
express throws error as `body-parser deprecated undefined extended`
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You have to explicitly set extended for bodyParser.urlencoded() since the default value is goi...
Convert Python dictionary to JSON array
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answered Feb 2 '13 at 10:50
kmerenkovkmerenkov
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How to use setArguments() and getArguments() methods in Fragments?
I have 2 fragments: (1)Frag1 (2)Frag2.
6 Answers
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How do I delete a fixed number of rows with sorting in PostgreSQL?
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answered Mar 2 '11 at 18:01
community wiki
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Convert a string to regular expression ruby
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answered Dec 28 '11 at 6:55
alonyalony
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Active Record - Find records which were created_at before today
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Using ActiveRecord the standard way:
MyModel.where("created_at < ?", 2.days.ago)
Using the underlying Arel interface:
MyModel.where(MyModel.arel_table[:created_at].lt(2.days.ago))
Using a thin layer over Arel:
MyModel.where(MyModel[:created_at] < 2.days.ago)
Using squeel:
MyModel.w...