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How to check if a string contains only digits in Java [duplicate]
...this that bears mentioning. If you do this know that NumberUtil.isNumber("1000D") will return true, so if you're really looking for only digits this this will not work.
– kasdega
Jan 23 '18 at 16:56
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Hidden features of Ruby
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Wow, no one mentioned the flip flop operator:
1.upto(100) do |i|
puts i if (i == 3)..(i == 15)
end
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answered Jun 16 '10 at 15:23
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How to declare a variable in MySQL?
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-- Syntax to Set value to a Global variable:
SET GLOBAL sort_buffer_size=1000000;
SET @@global.sort_buffer_size=1000000;
-- Syntax to Set value to a Session variable:
SET sort_buffer_size=1000000;
SET SESSION sort_buffer_size=1000000;
SET @@sort_buffer_size=1000000;
SET @@local.sort_buffer_size=1...
What is the difference between bottom-up and top-down?
...t recomputed.
example: If you are calculating the Fibonacci sequence fib(100), you would just call this, and it would call fib(100)=fib(99)+fib(98), which would call fib(99)=fib(98)+fib(97), ...etc..., which would call fib(2)=fib(1)+fib(0)=1+0=1. Then it would finally resolve fib(3)=fib(2)+fib(1),...
SQL exclude a column using SELECT * [except columnA] FROM tableA?
... (but not recommended).
CREATE TABLE contact (contactid int, name varchar(100), dob datetime)
INSERT INTO contact SELECT 1, 'Joe', '1974-01-01'
DECLARE @columns varchar(8000)
SELECT @columns = ISNULL(@columns + ', ','') + QUOTENAME(column_name)
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME = '...
Catch browser's “zoom” event in JavaScript
...-i) {
zoomListeners[i]();
}
}
setInterval(pollZoomFireEvent, 100);
})();
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How to use wait and notify in Java without IllegalMonitorStateException?
...bCompleted); option is generally a bad idea because it ties up your CPU at 100% checking the same variable constantly (see here)
– Matt Lyons
Jun 1 '13 at 21:39
5
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How to name factory like methods?
...s popularising a nice DSL style. examples:
Lists.newArrayListWithCapacity(100);
ImmutableList.of("Hello", "World");
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UITableView : viewForHeaderInSection: not called during reloadData:
...lues fixed my problem.
e.g.,
self.tableView.estimatedSectionHeaderHeight = 100
self.tableView.sectionHeaderHeight = UITableViewAutomaticDimension
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How to move an element into another element?
...endTo($("#main"));
});
#main {
border: 2px solid blue;
min-height: 100px;
}
.moveMeIntoMain {
border: 1px solid red;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="main">main</div>
<div id="moveMeIntoM...