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What does .SD stand for in data.table in R
...history of baseball
fkt = c('teamIDBR', 'teamIDlahman45', 'teamIDretro')
# confirm that they're stored as `character`
Teams[ , sapply(.SD, is.character), .SDcols = fkt]
# teamIDBR teamIDlahman45 teamIDretro
# TRUE TRUE TRUE
If you're confused by the use of sapply here,...
Django. Override save for model
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You may supply extra argument for confirming a new image is posted.
Something like:
def save(self, new_image=False, *args, **kwargs):
if new_image:
small=rescale_image(self.image,width=100,height=100)
self.image_small=SimpleUploadedFile(n...
Getting scroll bar width using JavaScript [duplicate]
...rror if you execute the function before the document is has loaded (window.onload)
– lostsource
Dec 2 '14 at 11:48
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Error 1022 - Can't write; duplicate key in table
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Can confirm that. But what can I do if the named constraint exists although the referenced table was already dropped?? Can I drop a constraint from a non-existing table? I guess I should update from MySQL 5.6 to current MariaDB.
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How to Turn Off Showing Whitespace Characters in Visual Studio IDE
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I can confirm that this also works in Visual Studio 2013 Express.
– jmstoker
Jun 2 '14 at 21:00
1
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How to prevent a jQuery Ajax request from caching in Internet Explorer?
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I've just confirmed that IE11 ignores this header. Chrome threw a CORS error as well.
– Lenin
Nov 7 '18 at 15:20
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How do I embed a single file from a GitHub gist with the new gist interface?
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Just to continue the confirmations, this still works on Blogger
– Theko Lekena
Jul 19 '19 at 10:53
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Is SecureRandom thread safe?
...at its lack of documentation as thread safe is a javadoc issue. Has anyone confirmed that it is in fact thread safe?
2 Answ...
Full-screen iframe with a height of 100%
...lement.height= the_height;
}
</script>
<iframe src="./page.html" onLoad="calcHeight(this);" frameborder="0" scrolling="no" id="the_iframe" width="100%" ></iframe>
share
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improve...
WebService Client Generation Error with JDK8
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I can confirm this solution also as working for maven build in eclipse with maven and jaxb-plugin. Can somebody explain why you don't need this property for Java7?
– Danny Lo
May 20 '15 at 9:3...