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How do I Convert DateTime.now to UTC in Ruby?
If I have d = DateTime.now , how do I convert 'd' into UTC (with the appropriate date)?
7 Answers
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Convert boolean result into number/integer
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Use the unary + operator, which converts its operand into a number.
+ true; // 1
+ false; // 0
Note, of course, that you should still sanitise the data on the server side, because a user can send any data to your sever, no matter what the client-side cod...
Difference between JSON.stringify and JSON.parse
...json.stringify(json.parse(data))?i saw this in code...so this is basically converting json data in to object and then again reconverting it to json data..
– HIRA THAKUR
Jul 22 '13 at 11:00
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How to convert a string with comma-delimited items to a list in Python?
How do you convert a string into a list?
14 Answers
14
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How to randomize (or permute) a dataframe rowwise and columnwise?
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Random Samples and Permutations ina dataframe
If it is in matrix form convert into data.frame
use the sample function from the base package
indexes = sample(1:nrow(df1), size=1*nrow(df1))
Random Samples and Permutations
How to detect READ_COMMITTED_SNAPSHOT is enabled?
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SELECT is_read_committed_snapshot_on FROM sys.databases
WHERE name= 'YourDatabase'
Return value:
1: READ_COMMITTED_SNAPSHOT option is ON. Read operations under the READ COMMITTED isolation level are based on snapshot scans and do not acquire locks.
0 (default)...
Ruby: Easiest Way to Filter Hash Keys?
...nt.
If you're using Ruby, you can use the select method. You'll need to convert the key from a Symbol to a String to do the regexp match. This will give you a new Hash with just the choices in it.
choices = params.select { |key, value| key.to_s.match(/^choice\d+/) }
or you can use delete_if an...
Relative frequencies / proportions with dplyr
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Error in bind_rows_(x, .id) : Column am` can't be converted from numeric to character`
– f0nzie
Aug 6 '18 at 23:41
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Convert java.util.Date to String
I want to convert a java.util.Date object to a String in Java.
18 Answers
18
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Sending email with attachments from C#, attachments arrive as Part 1.2 in Thunderbird
...1.FileName);
mail.Attachments.Add(attachment);
txtAttachment.Text =Convert.ToString (openFileDialog1.FileName);
}
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