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mongodb count num of distinct values per field/key
...aul what Richie said is that if the grouping is done just "regular" field (string, int etc.) then you don't need the unwind step. Isn't it correct?
– guyarad
Oct 19 '17 at 10:00
...
Should I instantiate instance variables on declaration or in the constructor?
... burned in an interesting way today:
class MyClass extends FooClass {
String a = null;
public MyClass() {
super(); // Superclass calls init();
}
@Override
protected void init() {
super.init();
if (something)
a = getStringYadaYada();
...
How to deserialize a list using GSON or another JSON library in Java?
...uch more readable.
In Kotlin this looks like this:
Gson().fromJson(jsonString, Array<Video>::class.java)
To convert this array into List, just use .toList() method
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How do I skip a match when using Ctrl+D for multiple selections in Sublime Text 2?
... word.
If you double click to select word, Ctrl + D will select the exact string not just the highlighted ones.
In other words, Ctrl + D with nothing highlighted does whole-word search. If you have something highlighted already, Ctrl + D will do substring searching.
I have tested and it works in ...
How do Python's any and all functions work?
....0001, True, (False,)])
(True, True) # ^^^-- truthy non-empty string
>>> any([0, 0.0, False, (), '']), all([1, 0.0001, True, (False,), {}])
(False, False) # ^^-- falsey
If the iterables are empty, any returns False, and all ret...
How to convert java.sql.timestamp to LocalDate (java8) java.time?
...before any timestamp -> java.time conversion:
public static void main(String... args) {
TimeZone utcTimeZone = TimeZone.getTimeZone("UTC");
TimeZone.setDefault(utcTimeZone);
...
timestamp.toLocalDateTime().toLocalDate();
}
Or you can use toInstant.atZone chain:
timestamp.toIn...
Why java classes do not inherit annotations from implemented interfaces?
...cy.RUNTIME)
@Target(ElementType.METHOD) @Inherited
public @interface Baz { String value(); }
public interface Foo{
@Baz("baz") void doStuff();
}
public interface Bar{
@Baz("phleem") void doStuff();
}
public class Flipp{
@Baz("flopp") public void doStuff(){}
}
public class MyClass ext...
How to destroy an object?
...hich case you can't use unlink() because unlink() will require a path name string but in this case $MyConnection is an Object.
So you have another choice of setting its value to null:
$MyConnection = null;
now things go right, as you have expected. You don't have any content inside the variable $...
How to load a UIView using a nib file created with Interface Builder
...adFromNib.h"
@implementation NSObject (LoadFromNib)
+ (id)loadFromNib:(NSString *)name classToLoad:(Class)classToLoad {
NSArray *bundle = [[NSBundle mainBundle] loadNibNamed:name owner:self options:nil];
for (id object in bundle) {
if ([object isKindOfClass:classToLoad]) {
...
Is it bad to have my virtualenv directory inside my git repository?
...ith pip install -r requirements.txt. RyanBrady already showed how you can string the deploy statements in a single line:
# before 15.1.0
virtualenv --no-site-packages --distribute .env &&\
source .env/bin/activate &&\
pip install -r requirements.txt
# after deprecation o...