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Understand the “Decorator Pattern” with a real world example
... sell few pizza varieties and they will also provide toppings in the menu. Now imagine a situation wherein if the pizza shop has to provide prices for each combination of pizza and topping. Even if there are four basic pizzas and 8 different toppings, the application would go crazy maintaining all t...
Why are dashes preferred for CSS selectors / HTML attributes?
...elopers avoided it like the plague. Of course, we don't need the backslash nowadays, but the dash-etiquette has already been firmly established.
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Change private static final field using Java reflection
... Boolean as the one refered to by Boolean.TRUE
Everything that was "false" now is "true"
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Using reflection to change static final File.separatorChar for unit testing
How to limit setAccessible to only “legitimate” uses?
Has examples of messing with Integer's cache, mutating a...
SQLite add Primary Key
... CREATE TABLE AS syntax to create a table based on a SELECT statement. Now this table has no primary key but I would like to add one.
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How to restore to a different database in sql server?
...k ago. The backup is done weekly in the scheduler and I get a .bak file. Now I want to fiddle with some data so I need to restore it to a different database - Database2 .
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Detect Safari browser
...re are many legitimate use cases for browser detection. Do not presume to know the asker or answerer's intention. While it's great to include a helpful tip you may believe to be relevant, it's by no means a requirement.
– Ruben Martinez Jr.
Apr 10 '18 at 13:56
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How to declare an array in Python?
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variable = []
Now variable refers to an empty list*.
Of course this is an assignment, not a declaration. There's no way to say in Python "this variable should never refer to anything other than a list", since Python is dynamically typed.
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Using PHP with Socket.io
...de stuff and let it be with the connections it has no place in this domain now. Why do anything long-polling when you have websockets or flashsockets.
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How to return a string value from a Bash function
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There is no better way I know of. Bash knows only status codes (integers) and strings written to the stdout.
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SecurityException: Permission denied (missing INTERNET permission?)
this error is really really really strange and I don't know how to reproduce it and how to fix it because I made a lot of searches but nothing was useful.
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