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What's an easy way to read random line from a file in Unix command line?
...s (or Mac?). @Tracker1's perl one-liner below is more portable (and by my tests, is slightly faster).
– Adam Katz
Dec 19 '14 at 21:49
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sho...
Force page scroll position to top at page refresh in HTML
...
@Paul12_ - I just tested it on Safari 11.0.3 and works okay for me, which one are you using?
– ProfNandaa
Aug 21 '18 at 23:56
...
How to upload a file to directory in S3 bucket using boto
...ate_bucket(bucket_name,
location=boto.s3.connection.Location.DEFAULT)
testfile = "replace this with an actual filename"
print 'Uploading %s to Amazon S3 bucket %s' % \
(testfile, bucket_name)
def percent_cb(complete, total):
sys.stdout.write('.')
sys.stdout.flush()
k = Key(bucket)...
How to identify all stored procedures referring a particular table
I created a table on development environment for testing purpose and there are few sp's which are refreing this table. Now I have have to drop this table as well as identify all sp's which are referring this table. I am facing difficulty to find list of all sp's. Please suggest some query by assumin...
Where do “pure virtual function call” crashes come from?
...stance; I wasn't aware of that, but just proved it to myself with a little test code. Looking at a postmortem dump in WinDbg I thought I was dealing with a race where another thread was trying to use a derived object before it had been fully constructed, but this shines a new light on the issue, and...
Regular expression to allow spaces between words
...his question today, saw your comment; I use regex hero (regexhero.net) for testing regular expressions. I think the online version only works in Internet Explorer with Silverlight but it's better than nothing.
– Michael Armes
Jul 26 '17 at 14:33
...
Reference - What does this error mean in PHP?
... indexes do exist when you expect them to. Or it may mean that you need to test whether the indexes exist using array_key_exists or isset:
$data = array('foo' => '42', 'bar');
if (array_key_exists('spinach', $data)) {
echo $data['spinach'];
}
else {
echo 'No key spinach in the array';
}
...
What is the most efficient way to deep clone an object in JavaScript?
...
Checkout this benchmark: http://jsben.ch/#/bWfk9
In my previous tests where speed was a main concern I found
JSON.parse(JSON.stringify(obj))
to be the slowest way to deep clone an object (it is slower than jQuery.extend with deep flag set true by 10-20%).
jQuery.extend is pretty fast...
What is the difference between “px”, “dip”, “dp” and “sp”?
...
The reason for bucketing is so that developers can test their apps on a few devices of different densities and be confident the the layouts will look the same on a multitude of devices. So even if the physical size of buttons etc changes a little bit, the overall look of an a...
How to keep the console window open in Visual C++?
...al Studio (which is present at least up until version 2012 - I haven't yet tested 2013). This bug is detailed here.
In order to have the console pause after program termination on a makefile project, perform these steps (this may differ for versions other than 2010 - 2012):
1) Pass /SUBSYSTEM:CONS...