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C dynamically growing array
...hat is). There's no built-in dynamic array in C, you'll just have to write one yourself. In C++, you can use the built-in std::vector class. C# and just about every other high-level language also have some similar class that manages dynamic arrays for you.
If you do plan to write your own, here's so...
Which is the preferred way to concatenate a string in Python?
... This is because it's readable and fast. They are also just as fast, which one you choose is a matter of taste, the latter one is the most common. Here are timings with the timeit module:
a = a + b:
0.11338996887207031
a += b:
0.11040496826171875
However, those who recommend having lists and appe...
map function for objects (instead of arrays)
...ginally) provided the second solution presented in this answer. The first one works and is not necessarily wrong, but as others have stated, I don't like to see map being used that way. When I see map, my mind is automatically thinking "immutable data structure"
– mjohnsoneng...
Localization and internationalization, what's the difference?
... (i18n)the process of changing your software so that it isn't hardwired to one language/locale/culture.
Localization (l10n)the process of adding the appropriate resources to your software so that a particular language/locale is supported. It's bigger in scope than just this Wikipedia entry, but it...
John Carmack's Unusual Fast Inverse Square Root (Quake III)
...) , including a strange 0x5f3759df constant. See the code below. Can someone explain line by line what exactly is going on here and why this works so much faster than the regular implementation?
...
What's the simplest way to list conflicted files in Git?
...Pacerier, it's just messier. If you had a million unconflicting merges and one conflicting merge, you'd want something succinct for output.
– xster
Jan 7 '16 at 20:50
8
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How to print a dictionary's key?
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This is the one answer I know isn't right, since the OP said, "I don't want all the keys listed."
– Ned Batchelder
May 6 '11 at 0:58
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Upgrade python packages from requirements.txt using pip command
... I found helpful to do the following. 1. Deleted venv 2. Created a new one with the same name (the way to clean all pip packages) 3. Replace all == to >= in the requirements.txt 4. pip install -r requirements.txt 4.
– zhukovgreen
Jul 28 '17 at 5:17
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Why do x86-64 systems have only a 48 bit virtual address space?
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640kb is enough for anyone.
– user684934
Jul 16 '11 at 11:35
7
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How to Join to first row
...t TOP 1 without ORDER BY is not deterministic: this query you will get you one line item per order, but it is not defined which one will it be.
Multiple invocations of the query can give you different line items for the same order, even if the underlying did not change.
If you want deterministic o...