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How to convert a string Date to long millseconds
...rs posted in 2016 also use the then long outdated classes SimpleDateFormat and Date is a bit more of a mystery to me. java.time, the modern Java date and time API also known as JSR-310, is so much nicer to work with. You can use it on Android through the ThreeTenABP, see this question: How to use Th...
How to pass the values from one activity to previous activity
...he Activity when a user clicks the button, you need to create a new Intent and include the entered text value in its extras bundle. To pass it back to the parent call setResult before calling finish to close the secondary Activity.
Intent resultIntent = new Intent();
resultIntent.putExtra(PUBLIC_ST...
wait() or sleep() function in jquery?
I want to add a class, wait 2 seconds and add another class.
8 Answers
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Why is === faster than == in PHP?
...nverts, the data type temporarily to see if it’s equal to the other operand, whereas === (the identity operator) doesn’t need to do any converting whatsoever and thus less work is done, which makes it faster.
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How to export all collections in MongoDB?
I want to export all collections in MongoDB by the command:
26 Answers
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How to drop a table if it exists?
... dbo.Scores
No. That will drop the table only if it contains any rows (and will raise an error if the table does not exist).
Instead, for a permanent table you can use
IF OBJECT_ID('dbo.Scores', 'U') IS NOT NULL
DROP TABLE dbo.Scores;
Or, for a temporary table you can use
IF OBJECT_ID('...
How do I run multiple background commands in bash in a single line?
I normally run multiple commands with something like this:
8 Answers
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What is the difference between Type and Class?
What makes a type different from class and vice versa?
20 Answers
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Java: Best way to iterate through a Collection (here ArrayList)
...erbose IMO.
The third version is my preferred choice as well. It is short and works for all cases where you do not need any indexes or the underlying iterator (i.e. you are only accessing elements, not removing them or modifying the Collection in any way - which is the most common case).
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How do you do block comments in YAML?
... Comments begin with the number sign ( # ), can start anywhere on a line, and continue until the end of the line
A comparison with JSON, also from Wikipedia:
The syntax differences are subtle and seldom arise in practice: JSON allows extended charactersets like UTF-32, YAML requires a space a...