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How to count TRUE values in a logical vector
...ic way to count the number of TRUE values in a logical vector? I can think of two ways:
8 Answers
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sed one-liner to convert all uppercase to lowercase?
...pper case
$ tr '[:lower:]' '[:upper:]' < input.txt > output.txt
Works using GNU sed (BSD sed doesn't support \L \U):
# Converts upper to lower case
$ sed -e 's/\(.*\)/\L\1/' input.txt > output.txt
# Converts lower to upper case
$ sed -e 's/\(.*\)/\U\1/' input.txt > output.txt
...
Concat all strings inside a List using LINQ
...
By using LINQ, this should work;
string delimiter = ",";
List<string> items = new List<string>() { "foo", "boo", "john", "doe" };
Console.WriteLine(items.Aggregate((i, j) => i + delimiter + j));
class description:
public class Foo
{
...
How to create a CPU spike with a bash command
...st a designated amount of time and then stop. I'm hoping there's some trick in bash. I'm thinking some sort of infinite loop.
...
C++, What does the colon after a constructor mean? [duplicate]
...se #1, I assume you understand inheritance (if that's not the case, let me know in the comments). So you are simply calling the constructor of your base class.
For case #2, the question may be asked: "Why not just initialise it in the body of the constructor?" The importance of the initialisation l...
Can I record/play macros in Visual Studio 2012/2013/2015/2017/2019?
...
Xavier PoinasXavier Poinas
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Why use def main()? [duplicate]
...
Drew Dormann
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answered Oct 28 '10 at 8:56
Ignacio Vazquez...
Get a pixel from HTML Canvas?
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Georg SchöllyGeorg Schölly
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How do I log a Python error with debug information?
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logger.exception will output a stack trace alongside the error message.
For example:
import logging
try:
1/0
except ZeroDivisionError:
logging.exception("message")
Output:
ERROR:root:message
Traceback (most recent call last):
File "<stdin>", l...
How to set UITextField height?
...
Benjohn
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answered Dec 27 '11 at 5:48
ManjunathManjunath
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