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is not JSON serializable
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cyph3rn3tz
344 bronze badges
answered May 28 '13 at 11:04
alecxealecxe
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How to succinctly write a formula with many variables from a data frame?
... a formula to mean all the variables, it is the . identifier.
y <- c(1,4,6)
d <- data.frame(y = y, x1 = c(4,-1,3), x2 = c(3,9,8), x3 = c(4,-4,-2))
mod <- lm(y ~ ., data = d)
You can also do things like this, to use all variables but one (in this case x3 is excluded):
mod <- lm(y ~ . ...
How can I divide two integers to get a double?
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474
You want to cast the numbers:
double num3 = (double)num1/(double)num2;
Note: If any of the ...
How to format time since xxx e.g. “4 minutes ago” similar to Stack Exchange sites
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return Math.floor(interval) + " months";
}
interval = seconds / 86400;
if (interval > 1) {
return Math.floor(interval) + " days";
}
interval = seconds / 3600;
if (interval > 1) {
return Math.floor(interval) + " hours";
}
interval = seconds / 60;
if (interval >...
Git: Pull from other remote
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254
git pull is really just a shorthand for git pull <remote> <branchname>, in most case...
Why are margin/padding percentages in CSS always calculated against width?
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Ryan KinalRyan Kinal
15.6k44 gold badges3939 silver badges6262 bronze badges
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What is ApplicationException for in .NET?
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FemarefFemaref
57.2k77 gold badges124124 silver badges168168 bronze badges
9
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Comparing strings with == which are declared final in Java
...ing" will give you true, because string literals are interned.
From JLS §4.12.4 - final Variables:
A variable of primitive type or type String, that is final and initialized with a compile-time constant expression (§15.28), is called a constant variable.
Also from JLS §15.28 - Constant Exp...
How to redirect stderr and stdout to different files in the same line in script?
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294
Just add them in one line command 2>> error 1>> output
However, note that >> ...
What's the difference between JPA and Spring Data JPA?
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FritzFritz
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