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Opposite of %in%: exclude rows with values specified in a vector
A categorical variable V1 in a data frame D1 can have values represented by the letters from A to Z. I want to create a subset D2, which excludes some values, say, B, N and T. Basically, I want a command which is the opposite of %in%
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Change Circle color of radio button
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More simple, just set the buttonTint color: (only works on api level 21 or above)
<RadioButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/radio"
android:checked="true"
android:buttonTint="@color/your_color"/>
in your va...
Capitalize or change case of an NSString in Objective-C
...[NSString string];
}
NSString *uppercase = [[self substringToIndex:1] uppercaseString];
NSString *lowercase = [[self substringFromIndex:1] lowercaseString];
return [uppercase stringByAppendingString:lowercase];
}
- (NSString *)realSentenceCapitalizedString {
__block NSMutableStr...
Display help message with python argparse when script is called without any arguments
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13 Answers
13
Active
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Entity Framework select distinct name
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271
Using lambda expression..
var result = EFContext.TestAddresses.Select(m => m.Name).Distinct...
Regarding 'main(int argc, char *argv[])' [duplicate]
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119
The arguments argc and argv of main is used as a way to send arguments to a program, the possi...
What does dot (.) mean in a struct initializer?
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144
This is a C99 feature that allows you to set specific fields of the struct by name in an initi...
dyld: Library not loaded: /usr/local/lib/libpng16.16.dylib with anything php related
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11 Answers
11
Active
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Ignoring time zones altogether in Rails and PostgreSQL
...alue representing the count of microseconds from the Postgres epoch, 2000-01-01 00:00:00 UTC.
Postgres also has built-in knowledge of the commonly used UNIX time counting seconds from the UNIX epoch, 1970-01-01 00:00:00 UTC, and uses that in functions to_timestamp(double precision) or EXTRACT(EPOCH ...
time.sleep — sleeps thread or process?
...Thread
class worker(Thread):
def run(self):
for x in xrange(0,11):
print x
time.sleep(1)
class waiter(Thread):
def run(self):
for x in xrange(100,103):
print x
time.sleep(5)
def run():
worker().start()
waiter().start(...