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How do I “git blame” a deleted line?
git blame is great for modified and added lines, but how can I find when a line that existed in a specific previous commit was eventually deleted. I'm thinking bisect , but I was hoping for something handier.
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Encoding as Base64 in Java
...he import of your class:
import org.apache.commons.codec.binary.Base64;
And then change your class to use the Base64 class.
Here's some example code:
byte[] encodedBytes = Base64.encodeBase64("Test".getBytes());
System.out.println("encodedBytes " + new String(encodedBytes));
byte[] decodedBytes...
How to convert a Java 8 Stream to an Array?
... it does is find a method that takes in an integer (the size) as argument, and returns a String[], which is exactly what (one of the overloads of) new String[] does.
You could also write your own IntFunction:
Stream<String> stringStream = ...;
String[] stringArray = stringStream.toArray(size...
How can I check for an empty/undefined/null string in JavaScript?
... tools, testing === '' vs .length didn't show any discernible improvement (and using .length only works if you can assume that you have a string)
– bdukes
Sep 27 '10 at 13:19
27
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How can I merge two commits into one if I already started rebase?
...base todo list, that is into a commit on a previous line. Changing the command on your todo list’s very first line to squash will always produce this error as there is nothing for the first commit to squash into.
The Fix
First get back to where you started with
$ git rebase --abort
Say your h...
Batch file to delete files older than N days
...ll files older than 7 days in a batch file. I've searched around the web, and found some examples with hundreds of lines of code, and others that required installing extra command line utilities to accomplish the task.
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Removing fields from struct or hiding them in JSON Response
...hat, upon being called, performs a query, creates an instance of a struct, and then encodes that struct as JSON before sending back to the caller. I'd now like to allow the caller to be able to select the specific fields they would like returned by passing in a "fields" GET parameter.
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ToList()— does it create a new list?
...en the new list would contain copies of the elements in the original list, and updating a property of an element in the new list would not affect the equivalent element in the original list.)
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Check if an element contains a class in JavaScript?
...:
element.classList.contains(class);
This works on all current browsers and there are polyfills to support older browsers too.
Alternatively, if you work with older browsers and don't want to use polyfills to fix them, using indexOf is correct, but you have to tweak it a little:
function has...
Kotlin secondary constructor
...defined in a companion object
Sometimes you want your constructor private and only a factory method available to clients. For now this is only possible with a factory method defined in a companion object:
class C private (s: Int) {
companion object {
fun new(s: String) = C(s.length)
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