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Zero-pad digits in string
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@HirenBhut No. I’m 100% sure that it works. The documentation says so. I even tested it just for you: gist.github.com/klmr/e1319f6d921a382e86296cce06eb7dbd
– Konrad Rudolph
Feb 1 '18 at 12:07
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What is the preferred/idiomatic way to insert into a map?
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100
As of C++11, you have two major additional options. First, you can use insert() with list init...
How do I add the contents of an iterable to a set?
...s quickly before going public:
>\python27\python -mtimeit -s"it=xrange(10000);a=set(xrange(100))" "a.update(it)"
1000 loops, best of 3: 294 usec per loop
>\python27\python -mtimeit -s"it=xrange(10000);a=set(xrange(100))" "for i in it:a.add(i)"
1000 loops, best of 3: 950 usec per loop
>\p...
Regular expression to match a dot
...including dots, you could use re.escape:
import re
expression = 'whatever.v1.dfc'
escaped_expression = re.escape(expression)
print(escaped_expression)
output:
whatever\.v1\.dfc
you can use the escaped expression to find/match the string literally.
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Get a filtered list of files in a directory
...lob
Wild Cards:
files=glob.glob("data/*")
print(files)
Out:
['data/ks_10000_0', 'data/ks_1000_0', 'data/ks_100_0', 'data/ks_100_1',
'data/ks_100_2', 'data/ks_106_0', 'data/ks_19_0', 'data/ks_200_0', 'data/ks_200_1',
'data/ks_300_0', 'data/ks_30_0', 'data/ks_400_0', 'data/ks_40_0', 'data/ks_45_...
java get file size efficiently
...");
}
}
return (System.nanoTime() - before) / 1000;
}
}
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Is git's semi-secret empty tree object reliable, and why is there not a symbolic name for it?
...pty tree in 346245a1bb ("hard-code the empty tree object", 2008-02-13, Git v1.5.5-rc0 -- merge), and the function now known as oid_object_info() was taught the empty tree in c4d9986f5f ("sha1_object_info: examine cached_object store too", 2011-02-07, Git v1.7.4.1).
Note, you will see that SHA...
Why would $_FILES be empty when uploading files to PHP?
...e uploading in PHP:
Check php.ini for:
file_uploads = On
post_max_size = 100M
upload_max_filesize = 100M
You might need to use .htaccess or .user.ini if you are on shared hosting and don't have access to php.ini.
Make sure
you’re editing the correct ini file –
use the phpinfo() function to v...
How to find the JVM version from a program?
...IDE/sts-bundle/sts-3.7.2.RELEASE//plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -os linux -ws gtk -arch x86_64 -showsplash -launcher /home/.../STS IDE/sts-bundle/sts-3.7.2.RELEASE/STS -name STS --launcher.library /home/.../STS IDE/sts-bundle/sts-3.7.2.RELEASE//plugins/org.eclipse.e...
How to get parameters from the URL with JSP
...the question mark on the URL). For example, the URL http://hostname.com?p1=v1&p2=v2 contains two request parameters - - p1 and p2. In a POST request, the request parameters are taken from both query string and the posted data which is encoded in the body of the request.
This example demonstrate...