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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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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
1
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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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What Git branching models work for you?
...ver all the commits end up (the release version or trunk in SVN parlance). Downstream is everyone below them. Sending stuff upstream is the process of getting it merged into the release repo (like linux-2.6) and downstream is the changes from there going out, or from your repository as say the manag...
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...
The best way to remove duplicate values from NSMutableArray in Objective-C?
...me, which gets expensive quickly as the original array grows.
To get that down to O(N) time you could use a NSMutableSet to store a record of items already added to the new array, since NSSet lookups are O(1) rather than O(N). In other words, checking to see whether an element is a member of an NSS...