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Create a submodule repository from a folder and keep its git commit history
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How to succinctly write a formula with many variables from a data frame?
... 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 ~ . - x3, data = d)
Technically, . means all ...
python: how to identify if a variable is an array or a scalar
...o make a call to this function with a scalar 50 or an array [0, 10, 20, 30] . How can I identify within the function, what the length of NBins is? or said differently, if it is a scalar or a vector?
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How to convert 2D float numpy array to 2D int numpy array?
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Use the astype method.
>>> x = np.array([[1.0, 2.3], [1.3, 2.9]])
>>> x
array([[ 1. , 2.3],
[ 1.3, 2.9]])
>>> x.astype(int)
array([[1, 2],
[1, 2]])
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How to detect user inactivity in Android
...vity extends Activity {
public static final long DISCONNECT_TIMEOUT = 300000; // 5 min = 5 * 60 * 1000 ms
private static Handler disconnectHandler = new Handler(new Handler.Callback() {
@Override
public boolean handleMessage(Message msg) {
// todo
r...
How to use Swift @autoclosure
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Warif Akhand Rishi
21.2k66 gold badges7373 silver badges9797 bronze badges
answered Jun 8 '14 at 5:28
eddie_ceddie_c
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Restoring state of TextView after screen rotation?
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edited Jun 2 '11 at 6:30
answered May 23 '11 at 12:28
i...
How to declare an array in Python?
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365
variable = []
Now variable refers to an empty list*.
Of course this is an assignment, not a...
how to know if the request is ajax in asp.net mvc?
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MySQL remove all whitespaces from the entire column
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203
To replace all spaces :
UPDATE `table` SET `col_name` = REPLACE(`col_name`, ' ', '')
To remov...