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Which is more efficient: Multiple MySQL tables or one large table?
... on specific data collection of a single entity.
(e) It is a possibility: what you thought as a single value data may turn out to be really multiple values in future. e.g. credit limit is a single value field as of now. But tomorrow, you may decide to change the values as (date from, date to, credi...
How can I make a horizontal ListView in Android? [duplicate]
...ms? That will allow each of your list items to be horizontally scrollable (what you put in there is up to you, and can make them dynamic items similar to ListView). This will work well if you are only after a single row of items.
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prevent property from being serialized in web API
...s a better approach because it forces you to make explicit decisions about what will or will not make it through serialization. It also allows your model classes to live in a project by themselves, without taking a dependency on JSON.net just because somewhere else you happen to be serializing them ...
Rails 4 image-path, image-url and asset-url no longer work in SCSS files
...logo.png in /app/assets/images/logo.png and I do the following, this is what I get:
6 Answers
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COUNT(*) vs. COUNT(1) vs. COUNT(pk): which is better? [duplicate]
... don't use COUNT(1) for anything. It's a one-trick pony, which rarely does what you want, and in those rare cases is equivalent to count(*)
Use count(*) for counting
Use * for all your queries that need to count everything, even for joins, use *
SELECT boss.boss_id, COUNT(subordinate.*)
FROM boss...
How does data binding work in AngularJS?
...e in value, then it fires the change event.
The $apply() method, which is what you call when you are transitioning from a non-AngularJS world into an AngularJS world, calls $digest(). A digest is just plain old dirty-checking. It works on all browsers and is totally predictable.
To contrast dirty-...
presentViewController:animated:YES view will not appear until user taps again
...g some strange behaviour with presentViewController:animated:completion . What I'm making is essentially a guessing game.
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Convert Unix timestamp into human readable date using MySQL
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What's missing from the other answers (as of this writing) and not directly obvious is that from_unixtime can take a second parameter to specify the format like so:
SELECT
from_unixtime(timestamp, '%Y %D %M %H:%i:%s')
FROM...
How can I access “static” class variables within class methods in Python?
...e in a base class or a subclass. Which do you want to refer to? Depends on what you're trying to do. Foo.bar would always refer to an attribute of the specified class--which might be a base class or a subclass. self.__class__.bar would refer to whichever class the instance is a type of.
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git add . vs git commit -a
What's the difference between:
3 Answers
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