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Sorting data based on second column of a file
...rt command:
sort -k2 -n yourfile
-n, --numeric-sort compare according to string numerical value
For example:
$ cat ages.txt
Bob 12
Jane 48
Mark 3
Tashi 54
$ sort -k2 -n ages.txt
Mark 3
Bob 12
Jane 48
Tashi 54
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Get the date (a day before current time) in Bash
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if you have GNU date and i understood you correctly
$ date +%Y:%m:%d -d "yesterday"
2009:11:09
or
$ date +%Y:%m:%d -d "1 day ago"
2009:11:09
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What is the difference between object keys with quotes and without quotes?
...ce those are reserved keywords.
Some people might be tempted to pass in a string with whitespace then call o['I can have whitespace'] But I would call that bad practice.
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Max retries exceeded with URL in requests
... was specified in hints.ai_flags and service was not a numeric port-number string. It probably looked like the sleep fixed it, but you probably just slept through a transient DNS resolver issue.
– lingfish
Jun 6 '17 at 23:13
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Unicode, UTF, ASCII, ANSI format differences
...ar encoding.
UTF-16: 2 bytes per "code unit". This is the native format of strings in .NET, and generally in Windows and Java. Values outside the Basic Multilingual Plane (BMP) are encoded as surrogate pairs. These used to be relatively rarely used, but now many consumer applications will need to be...
Properties vs Methods
... setting the Text property of the Label this is how I would do it:
public string Title
{
get{ return titleLabel.Text;}
set{ titleLabel.Text = value;}
}
Setting the text:
Title = "Properties vs Methods";
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Change the name of a key in dictionary
...works for me in the python console (the .replace is being executed on the string that is used as the key)
– north.mister
Jul 28 '16 at 19:19
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Adding days to $Date in PHP
...t solution to your query
$date=date_create("2013-03-15"); // or your date string
date_add($date,date_interval_create_from_date_string("40 days"));// add number of days
echo date_format($date,"Y-m-d"); //set date format of the result
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Group query results by month and year in postgresql
...ht make sense to use date_trunc, but in some cases having a formatted date string is preferable, and if you're using a performant data warehouse the additional computation might not be a deal breaker. For example, if you are running a quick analytics report using redshift, and it usually takes 3 sec...
How to check if a float value is a whole number
...nd to 16 digits; 1.0000000000000001 is displayed as 1.0, in 3 the shortest string representation that produces the same value is shown.
– Martijn Pieters♦
Feb 5 '14 at 17:21
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