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Undo a merge by pull request?
...st with the ability to unrevert later.
To do so, you will need to take the ID of the merge commit.
In the above example the merge commit is the top one where it says "Merged pull request #123...".
Do this to revert the both changes ("Add bar" and "Add foo") and you will end up with in one commit r...
Count, size, length…too many choices in Ruby?
...; [1,2,3].count{|x| x > 2 }
=> 1
In the case where you don't provide a parameter to count it has basically the same effect as calling length. There can be a performance difference though.
We can see from the source code for Array that they do almost exactly the same thing. Here is the C c...
Accessing last x characters of a string in Bash
...gative offset must be separated from the colon by at least one
space to avoid being confused with the ‘:-’ expansion. Substring indexing is
zero-based unless the positional parameters are used, in which case the indexing
starts at 1 by default. If offset is 0, and the positional parameters are u...
Debugging Package Manager Console Update-Database Seed Method
...n class when I run Update-Database from the Package Manager Console but didn't know how to do it. I wanted to share the solution with others in case they have the same issue.
...
Turn off constraints temporarily (MS SQL)
...ited Jun 22 '11 at 14:53
Brian Gideon
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answered Apr 10 '09 at 9:36
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Where does the “flatmap that s***” idiomatic expression in Scala come from?
...h function might return null. When you actually use null you code will be riddled with null checks. But if you use Options instead of values, you can just flatmap the values with the desired functions, chaining the functions in the case of multiple functions and get a collection with just the result...
Why should we include ttf, eot, woff, svg,… in a font-face
...If you don't want to support IE 8 and lower, and iOS 4 and lower, and android 4.3 or earlier, then you can just use WOFF (and WOFF2, a more highly compressed WOFF, for the newest browsers that support it.)
@font-face {
font-family: 'MyWebFont';
src: url('myfont.woff2') format('woff2'),
...
What data is stored in Ephemeral Storage of Amazon EC2 instance?
...red depends on what type of AMI you chose to create. The below answer by @nidalpres is more complete. If you chose to create an AMI backed by EBS, then your root directory is NOT stored in ephemeral storage.
– mattgmg1990
Oct 9 '13 at 21:57
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how do I query sql for a latest record date for each user
...te (max(date) would return a date that would join multiple records). To avoid this issue, it would be preferable to use @dotjoe's solution: stackoverflow.com/a/2411763/4406793.
– Marco Roy
Mar 19 '19 at 18:52
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How to declare constant map
...
10 : "X",
9 : "IX",
5 : "V",
4 : "IV",
1 : "I",
}
Inside a func you can declare it like:
romanNumeralDict := map[int]string{
...
And in Go there is no such thing as a constant map. More information can be found here.
Try it out on the Go playground.
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