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Find size of an array in Perl
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The first and third ways are the same: they evaluate an array in scalar context. I would consider this to be the standard way to get an array's size.
The second way actually returns the last index of the array, which is not (usually) ...
How to squash all git commits into one?
... keep all the commit messages you could first do git log > original.log and then edit that for your initial commit message in the new repository:
rm -rf .git
git init
git add .
git commit
or
git log > original.log
# edit original.log as desired
rm -rf .git
git init
git add .
git commit -F ...
Insert spaces between words on a camel-cased token [duplicate]
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Slightly better regex that handles acronyms correctly: @"(\B[A-Z]+?(?=[A-Z][^A-Z])|\B[A-Z]+?(?=[^A-Z]))"
– Aviad P.
Dec 24 '12 at 10:01
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What is the difference between user and kernel modes in operating systems?
What are the differences between User Mode and Kernel Mode, why and how do you activate either of them, and what are their use cases?
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Invoking JavaScript code in an iframe from the parent page
Basically, I have an iframe embedded in a page and the iframe has some JavaScript routines I need to invoke from the parent page.
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IntelliJ inspection gives “Cannot resolve symbol” but still compiles code
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First of all you should try File | Invalidate Caches and if it doesn't help, delete IDEA system directory. Then re-import the Maven project and see if it helps.
In some weird cases compiled classes may report wrong info and confuse IDEA. Verify that the classes from this jar r...
mysql Foreign key constraint is incorrectly formed error
I have two tables, table1 is the parent table with a column ID and table2 with a column IDFromTable1 (not the actual name) when I put a FK on IDFromTable1 to ID in table1 I get the error Foreign key constraint is incorrectly formed error . I would like to delete table 2 record if tab...
How to get RelativeLayout working with merge and include?
...rom using several levels of nested LinearLayouts to one RelativeLayout and have come across a few problems that I haven not been able to find a workaround for...
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What integer hash function are good that accepts an integer hash key?
... a multiplier that is in the order of your hash size (2^32 in the example) and has no common factors with it. This way the hash function covers all your hash space uniformly.
Edit: The biggest disadvantage of this hash function is that it preserves divisibility, so if your integers are all divisibl...
How do I use vim registers?
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Registers in Vim let you run actions or commands on text stored within them. To access a register, you type "a before a command, where a is the name of a register. If you want to copy the current line into register k, you can type
"kyy
Or you can append to a regis...