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argparse store false if unspecified
...
The store_true option automatically creates a default value of False.
Likewise, store_false will default to True when the command-line argument is not present.
The source for this behavior is succinct and clear: http://hg.python.or...
Creating email templates with Django
...e this:
from django.core.mail import EmailMultiAlternatives
subject, from_email, to = 'hello', 'from@example.com', 'to@example.com'
text_content = 'This is an important message.'
html_content = '<p>This is an <strong>important</strong> message.</p>'
msg = EmailMultiAlternat...
How can I know when an EditText loses focus?
...
Kotlin way
editText.setOnFocusChangeListener { _, hasFocus ->
if (!hasFocus) { }
}
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delete map[key] in go?
...sions = map[string] chan int{};
sessions["moo"] = make (chan int);
_, ok := sessions["moo"];
if ok {
delete(sessions, "moo");
}
}
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Change x axes scale in matplotlib
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Try using matplotlib.pyplot.ticklabel_format:
import matplotlib.pyplot as plt
...
plt.ticklabel_format(style='sci', axis='x', scilimits=(0,0))
This applies scientific notation (i.e. a x 10^b) to your x-axis tickmarks
...
Center Google Maps (V3) on browser resize (responsive)
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You want another event listener, I think for "center_changed" on the map object, that updates a global variable with the new coordinates, which you can then use in your setCenter.
– duncan
Jan 10 '12 at 11:15
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How do I include related model fields using Django Rest Framework?
...ializers.ModelSerializer):
teachers = TeacherSerializer(source='teacher_set')
class Meta:
model = Classroom
Note that we use the source argument on the serializer field to specify the attribute to use as the source of the field. We could drop the source argument by instead making...
Multiple inheritance for an anonymous class
...ited Jun 5 '14 at 14:45
aspiring_sarge
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answered May 1 '11 at 13:04
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Declare slice or make slice?
...lter(s []int, fn func(int) bool) []int {
var p []int // == nil
for _, v := range s {
if fn(v) {
p = append(p, v)
}
}
return p
}
It means that, to append to a slice, you don't have to allocate memory first: the nil slice p int[] is enough as a slice to ad...
How to create a new java.io.File in memory?
...xt
Files.write(hello, ImmutableList.of("hello world"), StandardCharsets.UTF_8);
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