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MySQL load NULL values from CSV data
...ata.txt'
INTO TABLE moo
FIELDS TERMINATED BY ","
LINES TERMINATED BY "\n"
(one, two, three, @vfour, five)
SET four = NULLIF(@vfour,'')
;
If they're all possibly empty, then you'd read them all into variables and have multiple SET statements, like this:
LOAD DATA INFILE '/tmp/testdata.txt'
INTO TA...
How to replace multiple strings in a file using PowerShell
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One option is to chain the -replace operations together. The ` at the end of each line escapes the newline, causing PowerShell to continue parsing the expression on the next line:
$original_file = 'path\filename.abc'
$destin...
What is the best way to initialize a JavaScript Date to midnight?
...rs(0,0,0,0);
That will set the time to 00:00:00.000 of your current timezone, if you want to work in UTC time, you can use the setUTCHours method.
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Integer division with remainder in JavaScript?
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Another one, whose purpose I just spent the last 20 minutes trying to figure out, is apparently a/b | 0
– BlueRaja - Danny Pflughoeft
Mar 25 '11 at 22:42
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How do I purge a linux mail box with huge number of emails? [closed]
... It worked for me in nearly vanilla Debian 7.5. Alternatively one may want to delete all saved mails with simply typing > mbox in home directory, this just truncates mbox file.
– Ciantic
May 26 '14 at 15:48
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What is the proper way to check for null values?
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What about
string y = (Session["key"] ?? "none").ToString();
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Preloading images with jQuery
...;
});
}
// Usage:
preload([
'img/imageName.jpg',
'img/anotherOne.jpg',
'img/blahblahblah.jpg'
]);
Or, if you want a jQuery plugin:
$.fn.preload = function() {
this.each(function(){
$('<img/>')[0].src = this;
});
}
// Usage:
$(['img1.jpg','img2.jpg','img3....
Python recursive folder read
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Heads up to anyone as dumb/oblivious as me... this code sample writes a txt file to each directory. Glad I tested it in a version controlled folder, though everything I need to write a cleanup script is here too :)
– S...
Truststore and Keystore Definitions
... Although this should be true in practice, they can (and often are) one in the same. You can actually import a private key and a public certificate into the [java home]/jre/lib/security/cacerts default "truststore". The keytool utility does not make a distinction in the two terms, only in sto...
Validate that a string is a positive integer
...ately represent which parses as closer to a different value than the given one (which includes many integers over 9,007,199,254,740,992; for instance, 1234567890123456789 will fail). The former is an easy fix, the latter two not so much.
Regular Expression
The other approach is to test the charact...