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Add regression line equation and R^2 on graph
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Here is one solution
# GET EQUATION AND R-SQUARED AS STRING
# SOURCE: https://groups.google.com/forum/#!topic/ggplot2/1TgH-kG5XMA
lm_eqn <- function(df){
m <- lm(y ~ x, df);
eq <- substitute(italic(y) == a + b %.% ...
Differences between MySQL and SQL Server [closed]
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One thing you have to watch out for is the fairly severe differences in the way SQL Server and MySQL implement the SQL syntax.
Here's a nice Comparison of Different SQL Implementations.
For example, take a look at the top-...
What does ||= (or-equals) mean in Ruby?
...the other threads on the Ruby mailing-list that discuss this issue.
Here's one: The definitive list of ||= (OR Equal) threads and pages
If you really want to know what is going on, take a look at Section 11.4.2.3 "Abbreviated assignments" of the Ruby Language Draft Specification.
As a first approxim...
Why can't C# interfaces contain fields?
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The one thing I do sometimes miss is a java-like ability to define interface-level constants, which presumably would not require a "slot" to support in the language.
– LBushkin
Jan 22 '10 at...
What's the difference between ViewData and ViewBag?
... can make the most out of it. If you don't like it or feel like its more prone to errors, simply don't use it. :)
– Bilal Fazlani
Mar 15 '15 at 9:19
5
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Create a pointer to two-dimensional array
I need a pointer to a static 2-dimensional array. How is this done?
10 Answers
10
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Java Stanford NLP: Part of Speech labels?
...s vs. whether yet
CD: numeral, cardinal
mid-1890 nine-thirty forty-two one-tenth ten million 0.5 one forty-
seven 1987 twenty '79 zero two 78-degrees eighty-four IX '60s .025
fifteen 271,124 dozen quintillion DM2,000 ...
DT: determiner
all an another any both del each either every ha...
Concurrent HashSet in .NET Framework?
...ere are some workarounds.
ConcurrentDictionary (recommended)
This first one is to use the class ConcurrentDictionary<TKey, TValue> in the namespace System.Collections.Concurrent. In the case, the value is pointless, so we can use a simple byte (1 byte in memory).
private ConcurrentDictiona...
PATH issue with pytest 'ImportError: No module named YadaYadaYada'
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It requires to rewrite relative imports to absolute ones, if you have the code for running the application not on the level, where you execute the command from. For example: project/test/all-my-tests and project/src/app.py and because of that change, one needs to call the app....
Markdown open a new window link [duplicate]
... Markdown provides shorthand for the most common features of HTML. One of its best features is that you can always fallback to the full syntax for HTML. This includes doing things that aren't included in markdown. Personally, I like that markdown is concise and includes very little fluff. I...