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How to organize large R programs?
When I undertake an R project of any complexity, my scripts quickly get long and confusing.
11 Answers
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ggplot with 2 y axes on each side and different scales
...er visualization techniques.
Maybe you can use faceting and scale free to compare the two data series? - e.g. look here: https://github.com/hadley/ggplot2/wiki/Align-two-plots-on-a-page
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SQLite Concurrent Access
... very well. But if you start writing concurrently, lock contention could become an issue. A lot would then depend on how fast your filesystem is, since the SQLite engine itself is extremely fast and has many clever optimizations to minimize contention. Especially SQLite 3.
For most desktop/laptop/t...
How can I read and parse CSV files in C++?
... load and use CSV file data in C++. At this point it can really just be a comma-delimited parser (ie don't worry about escaping new lines and commas). The main need is a line-by-line parser that will return a vector for the next line each time the method is called.
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Form inline inside a form horizontal in twitter bootstrap?
... This works for bootstrap2. For bootstrap 3 visit: stackoverflow.com/questions/18429121/…
– Tomislav Muic
Feb 19 '14 at 15:27
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“INSERT IGNORE” vs “INSERT … ON DUPLICATE KEY UPDATE”
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I would recommend using INSERT...ON DUPLICATE KEY UPDATE.
If you use INSERT IGNORE, then the row won't actually be inserted if it results in a duplicate key. But the statement won't generate an error. It generates a warning instead....
What issues should be considered when overriding equals and hashCode in Java?
...you should override the other.
Use the same set of fields that you use to compute equals() to compute hashCode().
Use the excellent helper classes EqualsBuilder and HashCodeBuilder from the Apache Commons Lang library. An example:
public class Person {
private String name;
private int age...
How to import other Python files?
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How to think in data stores instead of databases?
...There's two main things to get used to about the App Engine datastore when compared to 'traditional' relational databases:
The datastore makes no distinction between inserts and updates. When you call put() on an entity, that entity gets stored to the datastore with its unique key, and anything tha...
Controlling the screenshot in the iOS 7 multitasking switcher
...object", but it was useful during my testing...
}
- (void)applicationDidBecomeActive:(UIApplication *)application
{
[self.secureDelegate show:@"applicationDidBecomeActive:"];
}
Note, I'm using applicationWillResignActive rather than the advised applicationDidEnterBackground, because, as other...