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Convert float to double without losing precision
...mitive double. Simply casting the float to double gives me weird extra precision. For example:
10 Answers
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Does free(ptr) where ptr is NULL corrupt memory?
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7.20.3.2 The free function
Synopsis
#include <stdlib.h>
void free(void *ptr);
Description
The free function causes the space pointed to by ptr to be deallocated, that is, made
available for further allocation. If ptr is a null pointer...
How to append rows to an R data frame
...ng(i)
}
df
}
Here's a similar approach, but one where the data.frame is created as the last step.
# Use preallocated vectors
f4 <- function(n) {
x <- numeric(n)
y <- character(n)
for (i in 1:n) {
x[i] <- i
y[i] <- i
}
data.frame(x, y, stringsAsFactors=FALSE)
}...
Terminating a script in PowerShell
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edited Jun 29 '16 at 8:14
StackzOfZtuff
1,4421515 ...
Why is there no Tree class in .NET?
...class library in .NET has some excellent data structures for collections (List, Queue, Stack, Dictionary), but oddly enough it does not contain any data structures for binary trees. This is a terribly useful structure for certain algorithms, such as those that take advantage of different traversal p...
Is it possible to use Visual Studio on macOS?
I want to install Visual Studio on macOS. Is this possible?
7 Answers
7
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Maximum and Minimum values for ints
...on. For eg., in Java, we have Integer.MIN_VALUE and Integer.MAX_VALUE . Is there something like this in python?
9 Answer...
What is time_t ultimately a typedef to?
I searched my Linux box and saw this typedef:
10 Answers
10
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Sorting 1 million 8-decimal-digit numbers with 1 MB of RAM
...ecimal numbers over a TCP connection, sort them, and then send the sorted list out over another TCP connection.
36 Answers...
How to run a Runnable thread in Android at defined intervals?
I developed an application to display some text at defined intervals in the Android emulator screen. I am using the Handler class. Here is a snippet from my code:
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