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How do I create directory if none exists using File class in Ruby?
...tokens = dirname.split(/[\/\\]/) # don't forget the backslash for Windows! And to escape both "\" and "/"
1.upto(tokens.size) do |n|
dir = tokens[0...n]
Dir.mkdir(dir) unless Dir.exist?(dir)
end
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How to make link look like a button?
...ide a tag won't work? :( I'm using Firefox 27. I also tried a.button {...} and it doesn't work either.
– just_a_girl
Feb 26 '14 at 0:51
4
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Waiting on a list of Future
...n use a CompletionService to receive the futures as soon as they are ready and if one of them throws an exception cancel the processing. Something like this:
Executor executor = Executors.newFixedThreadPool(4);
CompletionService<SomeResult> completionService =
new ExecutorCompletionSe...
How to calculate number of days between two given dates?
If I have two dates (ex. '8/18/2008' and '9/26/2008' ), what is the best way to get the number of days between these two dates?
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How to declare an ArrayList with values? [duplicate]
ArrayList or List declaration in Java has questioned and answered how to declare an empty ArrayList but how do I declare an ArrayList with values?
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How to execute a stored procedure within C# program
...
using (var conn = new SqlConnection(connectionString))
using (var command = new SqlCommand("ProcedureName", conn) {
CommandType = CommandType.StoredProcedure }) {
conn.Open();
command.ExecuteNonQuery();
}
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Shuffle an array with python, randomize array item order with python
...
import random
random.shuffle(array)
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Check if an element's content is overflowing?
...x, 100% 14px, 100% 14px;
/* Opera doesn't support this in the shorthand */
background-attachment: local, local, scroll, scroll;
}
<div class="scrollbox">
<ul>
<li>Not enough content to scroll</li>
<li>2</li>
<li>3</li>
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Python UTC datetime object's ISO format doesn't include Z (Zulu or Zero offset)
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Python datetime objects don't have time zone info by default, and without it, Python actually violates the ISO 8601 specification (if no time zone info is given, assumed to be local time). You can use the pytz package to get some default time zones, or directly subclass tzinfo yourself:...
1030 Got error 28 from storage engine
...orage engine" - means "not enough disk space".
To show disc space use command below.
myServer# df -h
Results must be like this.
Filesystem Size Used Avail Capacity Mounted on
/dev/vdisk 13G 13G 46M 100% /
devfs 1.0k 1.0k 0B 100% /dev
...