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Select 50 items from list at random to write to file
...an just take the first 50.
Otherwise, use
import random
random.sample(the_list, 50)
random.sample help text:
sample(self, population, k) method of random.Random instance
Chooses k unique random elements from a population sequence.
Returns a new list containing elements from the populat...
When should I make explicit use of the `this` pointer?
... I would rather just avoid the name clash with conventions like "m_a" or "a_".
– Tom
Jun 15 '09 at 5:28
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How do I get an ISO 8601 date on iOS?
...];
NSLocale *enUSPOSIXLocale = [NSLocale localeWithLocaleIdentifier:@"en_US_POSIX"];
[dateFormatter setLocale:enUSPOSIXLocale];
[dateFormatter setDateFormat:@"yyyy-MM-dd'T'HH:mm:ssZZZZZ"];
[dateFormatter setCalendar:[NSCalendar calendarWithIdentifier:NSCalendarIdentifierGregorian]];
NSDate *now ...
How to split a sequence into two pieces by predicate?
...
One can shorten the function inside partition to _ % 2 == 0.
– k0pernikus
Aug 21 '19 at 14:11
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Reading a plain text file in Java
...
new InputStreamReader(new FileInputStream(fileUtf8), StandardCharsets.UTF_8)
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Doctrine and composite unique keys
...straint;
/**
* Common\Model\Entity\VideoSettings
*
* @Table(name="video_settings",
* uniqueConstraints={
* @UniqueConstraint(name="video_unique",
* columns={"video_dimension", "video_bitrate"})
* }
* )
* @Entity
*/
See @UniqueConstraint
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How to get Maven project version to the bash command line
... still more complicated than it needs to be. For me it's as simple as:
MVN_VERSION=$(mvn -q \
-Dexec.executable=echo \
-Dexec.args='${project.version}' \
--non-recursive \
exec:exec)
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Request Monitoring in Chrome
...not you can change that link to open in the same window by setting target='_self' ). Then, for example, you can see the response from the form that got submitted after it redirects you. Make sure to also notice the filter as the responses pile up on new page loads.
– JeremyS
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Tool to convert Python code to be PEP8 compliant
...ther plugin "Python Script". However, it works. Plz check here: bit.ly/pep8_tonizer
– kmonsoor
Apr 28 '14 at 15:23
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How to check whether an array is empty using PHP?
... if the variable might not have been set AND you don't wont to trigger an E_NOTICE; IMO this is generally a bad idea.
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