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Difference between Fact table and Dimension table?
...s.
More details:
Fact and dimension tables appear in a what is commonly known as a Star Schema. A primary purpose of star schema is to simplify a complex normalized set of tables and consolidate data (possibly from different systems) into one database structure that can be queried in a very effici...
switch / pattern matching idea
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I know it's an old topic, but in c# 7 you can do :
switch(shape)
{
case Circle c:
WriteLine($"circle with radius {c.Radius}");
break;
case Rectangle s when (s.Length == s.Height):
WriteLine($"{s...
Can I get a patch-compatible output from git-diff?
...
Yeah, now I wonder how I found out about git apply. The thing with git diff is (I think) from using git reset -- the relationships among the repo, the index, and the working area are the issue.
– Malvolio
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How to prevent http file caching in Apache httpd (MAMP)
...answer from @brianegge, where the mod_expires solution is also explained)
Now this won't work for static files, like your javascript files. As for static files there is only apache (without any expiration module) between the browser and the source file.
To prevent caching of javascript files, which...
What's the difference between git reflog and log?
...ith some of your commit code) and delete the branches rm .git/refs/heads/*
Now git log --oneline will show only HEAD and its commits ancestors.
git reflog on the other hand is using direct log that is created inside .git/logs
Experiment: rm -rf .git/logs and git reflog is empty.
Anyway, even if you ...
Record file copy operation with Git
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@allyourcode: I'm sorry, I haven't noticed this. Fixed now, thanks.
– Jakub Narębski
Jul 26 '10 at 7:15
4
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Are Roslyn SyntaxNodes reused?
...nd re-parse only the portions of the tree that were affected by the edit.
Now when you try to put all five of those things into one data structure you immediately run into problems:
How do you build a node in the first place? The parent and the child both refer to each other, and are immutable, s...
Use of def, val, and var in scala
...cala> def something = 2 + 3 * 4
something: Int
scala> something // now it's evaluated, lazily upon usage
res30: Int = 14
Example, val
scala> val somethingelse = 2 + 3 * 5 // it's evaluated, eagerly upon definition
somethingelse: Int = 17
Example, var
scala> var aVariable = 2 * 3...
How do I expand the output display to see more columns of a pandas DataFrame?
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Nowadays options can also be set as assignments to attributes of pd.options, e.g. pd.options.display.max_rows = 999
– unutbu
Jun 7 '15 at 0:19
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Instance variable: self vs @
...e birthdate and then calculate age based on the difference in time between now and the birthdate -- then the code depending on the method doesn't need to change. If it used the property directly, then the change would need to propagate to other areas of the code. In this sense, using the property ...