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Reordering of commits
... c ...
pick a ...
squash d ...
squash e ...
squash g ...
pick b
squash f
Now the history should look like this:
c - [a+d+e+g] - [b+f] (branchA)
/
--o-x-x-x-x-x-x-x-x-x-x (master)
Now, let's grab the newly-squashed commit b+f for branchB.
git checkout branchB
git cherry-pick branchA # c...
Summarizing multiple columns with dplyr? [duplicate]
...x. I have a data frame with different variables and one grouping variable. Now I want to calculate the mean for each column within each group, using dplyr in R.
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Difference between Covariance & Contra-variance
...s T → IE<T>. Notice that this is a "thin arrow".
With me so far?
Now let's consider a relation. There is an assignment compatibility relationship between pairs of types in the first set. A value of type Tiger can be assigned to a variable of type Animal, so these types are said to be "assi...
Private setters in Json.Net
I know there's an attribute to handle private setters but I kind of want this behavior as a default, is there a way to accomplish this? Except tweaking the source. Would be great if there was a setting for this.
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git stash changes apply to new branch?
I was working on master branch, made some changes and then stashed them. Now, my master is at HEAD.
3 Answers
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What is JSON and why would I use it?
...ipt object you must first parse it, var x = JSON.parse('{"x":"y"}');, x is now an object but this is not JSON anymore.
See Javascript object Vs JSON
When working with JSON and JavaScript, you may be tempted to use the eval function to evaluate the result returned in the callback, but this is not...
What is the 'dynamic' type in C# 4.0 used for?
... to tell the compiler that a variable's type can change or that it is not known until runtime. Think of it as being able to interact with an Object without having to cast it.
dynamic cust = GetCustomer();
cust.FirstName = "foo"; // works as expected
cust.Process(); // works as expected
cust.Missing...
What is the motivation for bringing Symbols to ES6?
As you may know they are planning to include new Symbol primitive type in ECMAScript 6 (not to mention some other crazy stuff). I always thought that the :symbol notion in Ruby is needless; we could easily use plain strings instead, like we do in JavaScript. And now they decide to complicate thi...
Split string into array of character strings
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This answer does now work if you're using Java 8. See stackoverflow.com/a/22718904/1587046
– Alexis C.
Apr 25 '14 at 14:01
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How do I get the AM/PM value from a DateTime?
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@thomas - Good point. Edited now to specify CultureInfo.InvariantCulture
– Andy
Jun 24 '15 at 11:42
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