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How to calculate the number of occurrence of a given character in each row of a column of strings?
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yeah, I also did, stringsAsFactors=TRUE on my comp, but didn't mention this
– tim riffe
Sep 14 '12 at 20:31
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MySQL: Enable LOAD DATA LOCAL INFILE
...cal-infile=1 to my.cnf file under [client], [mysqld], and [mysql] and used combinations of these. All with the same results. I've tried re-starting workbench but no luck. I've stopped and started mySQL workbench between each change as well.
– OrwellHindenberg
J...
How can I generate an MD5 hash?
...etInstance("MD5") to get a MD5 instance of MessageDigest you can use.
The compute the hash by doing one of:
Feed the entire input as a byte[] and calculate the hash in one operation with md.digest(bytes).
Feed the MessageDigest one byte[] chunk at a time by calling md.update(bytes). When you're d...
Using column alias in WHERE clause of MySQL query produces an error
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be determined.
Copied from MySQL documentation
As pointed in the comments, using HAVING instead may do the work. Make sure to give a read at this WHERE vs HAVING though.
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How do I compare two DateTime objects in PHP 5.2.8?
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The following seems to confirm that there are comparison operators for the DateTime class:
dev:~# php
<?php
date_default_timezone_set('Europe/London');
$d1 = new DateTime('2008-08-03 14:52:10');
$d2 = new DateTime('2008-01-03 11:11:10');
var_dump($d1 == $d2);
var_du...
How to check if a string is a valid JSON string in JavaScript without using Try/Catch
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A comment first. The question was about not using try/catch.
If you do not mind to use it, read the answer below.
Here we just check a JSON string using a regexp, and it will work in most cases, not all cases.
Have a look arou...
Convert timestamp in milliseconds to string formatted time in Java
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Comment: HH will print the hour at that date (0-23), not the total amount of hours elapsed since 1970. Just sayin'.
– JohnyTex
Aug 19 '14 at 11:41
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Changing every value in a hash in Ruby
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Bash history without line numbers
The bash history command is very cool. I understand why it shows the line numbers, but is there a way I can invoke the history command and suppress the line numbers?
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