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Difference between SPI and API?
...f you simply want to use JDBC, you don't need to use it directly, but everyone who implements a JDBC driver must implement that class.
Sometimes they overlap, however. The Connection interface is both SPI and API: You use it routinely when you use a JDBC driver and it needs to be implemented by the...
When should I use a NoSQL database instead of a relational database? Is it okay to use both on the s
... lot about them lately, but I'm still unsure why I would want to implement one, and under what circumstances I would want to use one.
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Functional programming - is immutability expensive? [closed]
... more reasonable benchmark of Quicksort, recognizing that this is probably one of the worst cases for FP vs. mutable algorithms, and ignoring the data-structure issue (i.e. pretending that we can have an immutable Array):
object QSortExample {
// Imperative mutable quicksort
def swap(xs: Array[...
Looping through a hash, or using an array in PowerShell
...adable. The %{} operator is considered shorthand. Here's how it should be done in a script for readability and reusability:
Variable Setup
PS> $hash = @{
a = 1
b = 2
c = 3
}
PS> $hash
Name Value
---- -----
c ...
What does the brk() system call do?
...he remaining space is reserved for the kernel). I can't presently think of one that didn't but I don't know 'em all. Most 64-bit CPUs don't actually let you use the entire 64-bit space; the high 10 to 16 bits of the address have to be all-zero or all-one. The stack is generally placed near the top o...
Import and Export Excel - What is the best library? [closed]
In one of our ASP.NET applications in C#, we take a certain data collection (SubSonic collection) and export it to Excel. We also want to import Excel files in a specific format. I'm looking for a library I can use for this purpose.
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“Unresolved inclusion” error with Eclipse CDT for C standard library headers
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One thing that confused me was that I had to add the path to the "includes" tab, rather than the "library paths" tab. I always thought that "anglebracket" includes were "library" includes.
– aaaidan
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ADB not recognising Nexus 4 under Windows 7
...I've turned debugging, third-party apps, and mock locations all on on my phone as well.
26 Answers
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How do I check if a string is a number (float)?
... try clause, so I would put the return True in an else clause of the try. One of the reasons is that with the code in the question, if I had to review it, I would have to check that the second statement in the try clause cannot raise a ValueError: granted, this does not require too much time or bra...
How can I rollback a github repository to a specific commit?
...eed to rollback the repository to commit 80, and remove all the subsequent ones.
6 Answers
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