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What is float in Java?
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In Java, when you type a decimal number as 3.6, its interpreted as a double. double is a 64-bit precision IEEE 754 floating point, while floatis a 32-bit precision IEEE 754 floating point. As a float is less precise than a double, the conve...
MongoDB aggregation framework match OR
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$match: { $or: [{ author: 'dave' }, { author: 'john' }] }
Like so, since the $match operator just takes what you would normally put into the find() function
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How to create index on JSON field in Postgres?
...reSQL 9.3 Beta 2 (?), how do I create an index on a JSON field? I tried it using the -> operator used for hstore but got the following error:
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What is the difference between isinstance('aaa', basestring) and isinstance('aaa', str)?
... versions prior to 3.0 there are two kinds of strings "plain strings" and "unicode strings". Plain strings (str) cannot represent characters outside of the Latin alphabet (ignoring details of code pages for simplicity). Unicode strings (unicode) can represent characters from any alphabet including s...
In Intellij, how do I toggle between camel case and underscore spaced?
At my company we have two different style guides for java vs sql. In java I have a field named historyOfPresentIllness and when i write the sql, I want to name it history_of_present_illness . Is there a keyboard shortcut to switch from one to the other when I have the phrase highlighted? Or pe...
What is RPC framework and Apache Thrift?
I need to learn Apache Thrift for a University project. As this tutorial says, it is an RPC framework, and it was the only document I could find for Thrift other than their documentation .
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Remove data.frame row names when using xtable
OK, I admit this one is a bit uptight (read: "stupid"), and I assume it's quite easy too. I'm writing a report and I want to use xtable package for LaTeX table generation (note that memisc package does the job, but say I want to do this solely with xtable ).
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Coredata Error “data: ”
I try to pull out data from CoreData with the following code
2 Answers
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Calculate a percent with SCSS/SASS
I want to set a width in percentage in scss via calculation, but it gives me errors..
3 Answers
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Doctrine 2 can't use nullable=false in manyToOne relation?
An User has one Package associated with it. Many users can refer to the same package. User cannot exists without a Package defined. User should own the relation. Relation is bidirectional, so a Package has zero or more users in it.
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