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Generate all permutations of a list without adjacent equal elements
...is greedy algorithm returns optimal solutions, by the following logic. We call a prefix (partial solution) safe if it extends to an optimal solution. Clearly the empty prefix is safe, and if a safe prefix is a whole solution then that solution is optimal. It suffices to show inductively that each gr...
MySQL: Quick breakdown of the types of joins [duplicate]
...n rows when there is at least one match in both tables
LEFT JOIN: Return all rows from the left table, even if there are no matches in the right table
RIGHT JOIN: Return all rows from the right table, even if there are no matches in the left table
FULL JOIN: Return rows when there is a match i...
git - skipping specific commits when merging
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If you want to merge most but not all of the commits on branch "maint" to "master", for instance, you can do this. It requires some work---- as mentioned above, the usual use case is to merge everything from a branch--- but sometimes it happens that you made ...
How do I clear my local working directory in Git? [duplicate]
... last committed state:
git reset --hard
To remove untracked files, I usually just delete all files in the working copy (but not the .git/ folder!), then do git reset --hard which leaves it with only committed files.
A better way is to use git clean (warning: using the -x flag as below will cause...
Are there constants in JavaScript?
... const:
const MY_CONSTANT = "some-value";
This will work in pretty much all browsers except IE 8, 9 and 10. Some may also need strict mode enabled.
You can use var with conventions like ALL_CAPS to show that certain values should not be modified if you need to support older browsers or are worki...
Official way to ask jQuery wait for all images to load before executing something
... DOM is loaded and $(window).on("load", handler) to execute something when all other things are loaded as well, such as the images.
The difference can be seen in the following complete HTML file, provided you have a jollyroger JPEG files (or other suitable ones):
<html>
<head>
...
Zoom to fit all markers in Mapbox or Leaflet
How do I set view to see all markers on map in Mapbox or Leaflet ? Like Google Maps API does with bounds ?
8 Answers
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How to have multiple CSS transitions on an element?
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Transition properties are comma delimited in all browsers that support transitions:
.nav a {
transition: color .2s, text-shadow .2s;
}
ease is the default timing function, so you don't have to specify it. If you really want linear, you will need to specify it:
tra...
Number of rows affected by an UPDATE in PL/SQL
...ut how many rows were affected by the UPDATE? When executing the query manually it tells me how many rows were affected, I want to get that number in PL/SQL.
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log4net hierarchy and logging levels
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Number of levels recorded for each setting level:
ALL DEBUG INFO WARN ERROR FATAL OFF
•All
•DEBUG •DEBUG
•INFO •INFO •INFO
•WARN •WARN •WARN •WARN
•ERROR •E...