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How do I specify the Linq OrderBy argument dynamically?
...typeof(Student).GetProperty(param);
var orderByAddress = items.OrderBy(x => propertyInfo.GetValue(x, null));
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foreach with index [duplicate]
... there a C# equivalent of Python's enumerate() and Ruby's each_with_index ?
10 Answers
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How to check if a string contains only digits in Java [duplicate]
In Java for String class there is a method called matches, how to use this method to check if my string is having only digits using regular expression. I tried with below examples, but both of them returned me false as result.
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List of Big-O for PHP functions
After using PHP for a while now, I've noticed that not all built-in PHP functions are as fast as expected. Consider these two possible implementations of a function that finds if a number is prime using a cached array of primes.
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Output of git branch in tree like fashion
...nclosed-message-display-tweaks merged in
(x) experiment merged in (only locally)
NOTE: working directory contains modified files
git-wtf shows you:
How your branch relates to the remote repo, if it's a tracking branch.
How your branch relates to non-feature ("version") branches, if i...
Getting the closest string match
...hing problem and its usefulness in solving a variety of problems which can allow us to automate tasks which previously required tedious user involvement.
Introduction
The need to do fuzzy string matching originally came about while developing the Gulf of Mexico Validator tool. What existed was a ...
Can constructors be async?
...her “fire and forget” void, or Task.
If the constructor of type T actually returned Task<T>, that would be very confusing, I think.
If the async constructor behaved the same way as an async void method, that kind of breaks what constructor is meant to be. After constructor returns, you s...
Getting hold of the outer class object from the inner class object
...
Within the inner class itself, you can use OuterClass.this. This expression, which allows to refer to any lexically enclosing instance, is described in the JLS as Qualified this.
I don't think there's a way to get the instance from outside the code of the inner class though. Of course, you...
Accessing last x characters of a string in Bash
... line:
$ foo=1234567890
$ echo $foo | grep -o ...$
890
To make it optionally get the 1 to 3 last chars, in case of strings with less than 3 chars, you can use egrep with this regex:
$ echo a | egrep -o '.{1,3}$'
a
$ echo ab | egrep -o '.{1,3}$'
ab
$ echo abc | egrep -o '.{1,3}$'
abc
$ echo abcd ...
Printing the last column of a line in a file
...ile | awk '/A1/ {print $NF}'
or without tail, showing the last column of all lines containing A1
awk '/A1/ {print $NF}' file
Thanks to @MitchellTracy's comment, tail might miss the record containing A1 and thus you get no output at all. This may be solved by switching tail and awk, searching ...