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How to estimate how much memory a Pandas' DataFrame will need?
...ry needed to hold the data (from wes's article), but I think he brought it down to a constant + final memory
– Jeff
Aug 6 '13 at 21:23
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Read a file line by line assigning the value to a variable
...p. There's probably a good reason for this, but it took my a while to nail down what was causing my code to fail before I discovered this.
– Alex
May 20 '14 at 21:22
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How to find Unused Amazon EC2 Security groups
... need to actually confirm the delete, in the popup it will show you a breakdown of which ones can be deleted (orphan) and which can't. You can then press cancel and then delete the orphan ones.
– rjarmstrong
Jun 21 '18 at 7:03
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Array versus List: When to use which?
... encoding;
I use a local rolling byte[] buffer which I fill before sending down to the underlying stream (and v.v.); quicker than BufferedStream etc;
it internally uses an array-based model of objects (Foo[] rather than List<Foo>), since the size is fixed once built, and needs to be very fast....
How to calculate a Mod b in Casio fx-991ES calculator
... switch display mode to ab/c:
Go to settings (Shift + Mode).
Press arrow down (to view more settings).
Select ab/c (number 1).
Now do your calculation (in comp mode), like 50 / 3 and you will see 16 2/3, thus, mod is 2. Or try 54 / 7 which is 7 5/7 (mod is 5).
If you don't see any fraction then ...
Polymorphism: Why use “List list = new ArrayList” instead of “ArrayList list = new ArrayList”? [dupl
...Safallwa the methods of List,or you may access the methods of ArrayList by downcasting later
– LancelotHolmes
Nov 21 '16 at 3:11
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In Java, when should I create a checked exception, and when should it be a runtime exception? [dupli
...ily IOException; that's just an example) wasn't recoverable but was forced down my throat anyway and I am often forced to make the choice between doing the above and polluting my API just to propagate a checked exception all the way to the top where it's (rightlfully) fatal and will be logged.
Ther...
Best way to convert an ArrayList to a string
...hell this is not the first (and accepted) answer.. I always have to scroll down until I know it's there.. elegant and concise
– Jack
Feb 24 '17 at 15:08
2
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How do I delete unpushed git commits?
... easier:
git cherry-pick master..topic
So the entire sequence will come down to:
git reset --hard <latest-commit-to-keep>
git cherry-pick master..topic
When your topic-duplicate branch has been checked out. That would remove previously-cherry-picked commits from the current duplicate, an...
When to use a View instead of a Table?
...life of the session? Reason I ask: we have a system that sometimes goes down in the middle of a long code run. I mitigate this by biting portions of the code into intermediate tables which save intermediate results. So if the system conks before code is complete, I only have to pick up starting...