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Java 8 Iterable.forEach() vs foreach loop
...om throwing checked exceptions, but common functional interfaces like Consumer don't declare any. Therefore, any code that throws checked exceptions must wrap them in try-catch or Throwables.propagate(). But even if you do that, it's not always clear what happens to the thrown exception. It could ge...
Curious null-coalescing operator custom implicit conversion behaviour
...ator.
I have not yet identified where precisely things go wrong, but at some point during the "nullable lowering" phase of compilation -- after initial analysis but before code generation -- we reduce the expression
result = Foo() ?? y;
from the example above to the moral equivalent of:
A? temp...
Which is the correct C# infinite loop, for (;;) or while (true)? [closed]
...milar responses offered within seconds of one another. Adam's follow-up comment led me to accepting an answer based on usage rather than convention.
– Bob Kaufman
Sep 9 '09 at 18:30
...
What's the algorithm to calculate aspect ratio?
...oid) {
printf ("gcd(1024,768) = %d\n",gcd(1024,768));
}
And here's some complete HTML/Javascript which shows one way to detect the screen size and calculate the aspect ratio from that. This works in FF3, I'm unsure what support other browsers have for screen.width and screen.height.
<html&...
On select change, get data attribute value
...'id')
or
$(this).find(':selected').attr('data-id')
although the first method is preferred.
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Should flux stores, or actions (or both) touch external services?
...ta storage services in doing so ...in which case the actions are just dumb message passers,
6 Answers
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Get last n lines of a file, similar to tail
...no assumptions about line length. Backs through the file one block at a time till it's found the right number of '\n' characters.
def tail( f, lines=20 ):
total_lines_wanted = lines
BLOCK_SIZE = 1024
f.seek(0, 2)
block_end_byte = f.tell()
lines_to_go = total_lines_wanted
b...
-didSelectRowAtIndexPath: not being called
...with a table view inside a tab view. In my UITableViewController , I implemented -tableView:didSelectRowAtIndexPath: , but when I select a row at runtime, the method isn't being called. The table view is being populated though, so I know that other tableView methods in my controller are being cal...
ERROR 2003 (HY000): Can't connect to MySQL server on '127.0.0.1' (111)
...ere is no replication enabled):
run the command vim /etc/mysql/my.cnf
comment bind-address = 127.0.0.1 using the # symbol
restart your mysql server once.
Update
In Step 1, if you cannot find bind-address in the my.cnf file, look for it in /etc/mysql/mysql.conf.d/mysqld.cnf file.
Update in case...