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Using crontab to execute script every minute and another every 24 hours [closed]
...ght):
0 0 * * * /path/to/php /var/www/html/reset.php
See this reference for how crontab works: http://adminschoice.com/crontab-quick-reference, and this handy tool to build cron jobx: http://www.htmlbasix.com/crontab.shtml
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FileSystemWatcher vs polling to watch for file changes
I need to setup an application that watches for files being created in a directory, both locally or on a network drive.
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What is the difference between is_a and instanceof?
I am aware that instanceof is an operator and that is_a is a method.
9 Answers
9
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ExecutorService, how to wait for all tasks to finish
What is the simplest way to to wait for all tasks of ExecutorService to finish? My task is primarily computational, so I just want to run a large number of jobs - one on each core. Right now my setup looks like this:
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How bad is shadowing names defined in outer scopes?
...bout all the warnings and hints it provides me to improve my code. Except for this one which I don't understand:
8 Answers
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What is the purpose of Looper and how to use it?
...r is a class which is used to execute the Messages(Runnables) in a queue. Normal threads have no such queue, e.g. simple thread does not have any queue. It executes once and after method execution finishes, the thread will not run another Message(Runnable).
Where we can use Looper class?
If someon...
Test or check if sheet exists
Basically I loop through all sheets in the origin workbook then set destsheet in the destination workbook to the sheet with the same name as the currently iterated one in the origin workbook.
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Why does Double.NaN==Double.NaN return false?
...ows produces a signed infinity, an operation that underflows produces a denormalized value or a signed zero, and an operation that has no mathematically definite result produces NaN. All numeric operations with NaN as an operand produce NaN as a result. As has already been described, NaN is unordere...
How can I recursively find all files in current and subfolders based on wildcard matching?
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Use find for that:
find . -name "foo*"
find needs a starting point, and the . (dot) points to the current directory.
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Fastest way to check if a string matches a regexp in ruby?
...ch?:
pattern.match?(string)
Regexp#match? is explicitly listed as a performance enhancement in the release notes for 2.4.0, as it avoids object allocations performed by other methods such as Regexp#match and =~:
Regexp#match?
Added Regexp#match?, which executes a regexp match without creati...