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What are the pros and cons of performing calculations in sql vs. in your application
...; the server could be streaming rows which you consume as they arrive - a "reader" metaphor is not uncommon.
– Marc Gravell♦
Sep 22 '11 at 23:03
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SQLite DateTime comparison
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For all those reading the first sentence, in '17 SQLite does have date and datetime
– alisianoi
Jun 21 '17 at 13:29
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Math - mapping numbers
...other words,
R = (20 - 10) / (6 - 2)
y = (x - 2) * R + 10
This evenly spreads the numbers from the first range in the second range.
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How to get last items of a list in Python?
..., like a string) would look like this:
num_list[-9:]
When I see this, I read the part in the brackets as "9th from the end, to the end." (Actually, I abbreviate it mentally as "-9, on")
Explanation:
The full notation is
sequence[start:stop:step]
But the colon is what tells Python you're giv...
Extending an Object in Javascript
...ct-oriented than that?"
You don't need constructors, no new instantiation (read why you shouldn't use new), no super, no self-made __construct. You simply create Objects and then extend or morph them.
This pattern also offers immutability (partial or full), and getters/setters.
TypeScript
The TypeSc...
What's the difference between HEAD^ and HEAD~ in Git?
...-parse documentation is full of great information and is worth an in-depth read. See also Git Tools - Revision Selection from the book Pro Git.
Order of Parent Commits
The commit 89e4fcb0dd from git’s own history is a merge commit, as git show 89e4fcb0dd indicates with the Merge header line that d...
Does Python optimize tail recursion?
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@Basic No, but you have to read the article you're commenting on. It seems very strongly that you didn't actually read it, considering how it "boils down" to you. (You might actually need to read both of the linked articles, unfortunately, since some a...
How can I check if a string represents an int, without using try/except?
... 0x4df, is a valid integer in some places, and 0891 is not in others. I dread to think what might arise given unicode in these kinds of checks.
– PlexQ
Mar 25 '12 at 17:03
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Eclipse does not highlight matching variables
...Eclipse Juno (and probably others) but I have a workaround!
If you have already checked all the configurations mentioned in the top answers here and it's STILL not working try this.
To confirm the problem:
Select a variable
Notice the highlight didn't work
Click away from eclipse so the editor l...
Equivalent C++ to Python generator pattern
...ators exist in C++, just under another name: Input Iterators. For example, reading from std::cin is similar to having a generator of char.
You simply need to understand what a generator does:
there is a blob of data: the local variables define a state
there is an init method
there is a "next" met...