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git undo all uncommitted or unsaved changes
...clean -fdx
WARNING: -x will also remove all ignored files, including ones specified by .gitignore! You may want to use -n for preview of files to be deleted.
To sum it up: executing commands below is basically equivalent to fresh git clone from original source (but it does not re-download...
How do you sign a Certificate Signing Request with your Certification Authority?
... (a.k.a server or user). Both of the two commands elide the two steps into one. And both assume you have a an OpenSSL configuration file already setup for both CAs and Server (end entity) certificates.
First, create a basic configuration file:
$ touch openssl-ca.cnf
Then, add the following to ...
How can I compare two lists in python and return matches
...
Not the most efficient one, but by far the most obvious way to do it is:
>>> a = [1, 2, 3, 4, 5]
>>> b = [9, 8, 7, 6, 5]
>>> set(a) & set(b)
{5}
if order is significant you can do it with list comprehensions like t...
Good ways to manage a changelog using git?
...re searchers, it's now possible to generate gorgeous logs with:
git log --oneline --decorate
Or, if you want it even prettier (with color for terminal):
git log --oneline --decorate --color
Piping that output to ChangeLog is what I currently use in all my projects, it's simply amazing.
...
How do I delete a fixed number of rows with sorting in PostgreSQL?
...ort some old MySQL queries to PostgreSQL, but I'm having trouble with this one:
6 Answers
...
What's the difference between a continuation and a callback?
...finally understood at intuition level all continuation-related concepts in one sweep! I new once it clicked, it was going to be simple and i would see i used the pattern many times before unknowingly, and it was just like that. Thanks so much for the wonderful and clear explanation.
...
Position Relative vs Absolute?
...ion: absolute;
This tells the browser that whatever is going to be positioned should be removed from the normal flow of the document and will be placed in an exact location on the page. It won't affect how the elements before it or after it in the HTML are positioned on the Web page however it wil...
Managing constructors with many parameters in Java
... has a default
private String _motto = ""; // most students don't have one
public StudentBuilder() { }
public Student buildStudent()
{
return new Student(_name, _age, _motto);
}
public StudentBuilder name(String _name)
{
this._name = _name;
retu...
Creation timestamp and last update timestamp with Hibernate and MySQL
...
In current Hibernate with JPA one can use "@CreationTimestamp" and "@UpdateTimestamp"
– Florian Loch
Mar 9 '15 at 10:04
...
Custom CSS Scrollbar for Firefox
...
Thank you, ThirtyDot. One question though: what about -moz-appearance:scrollbartrack-vertical - and other related CSS extensions? Perhaps they can be used in some way?
– Dimitri Vorontzov
May 29 '11 at 2:01
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