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How to use mod operator in bash?
...
You must put your mathematical expressions inside $(( )).
One-liner:
for i in {1..600}; do wget http://example.com/search/link$(($i % 5)); done;
Multiple lines:
for i in {1..600}; do
wget http://example.com/search/link$(($i % 5))
done
...
.prop('checked',false) or .removeAttr('checked')?
...ould cause inconsistent behavior. As of jQuery 1.6, the .prop() method provides a way to explicitly retrieve property values, while .attr() retrieves attributes.
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How do I test for an empty string in a Bash case statement?
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled...
How to convert a LocalDate to an Instant?
...R-310 will not select the time-zone for you automatically, so you must provide it.
LocalDate date = LocalDate.now();
Instant instant = date.atStartOfDay(ZoneId.systemDefault()).toInstant();
This example uses the default time-zone of the JVM - ZoneId.systemDefault() - to perform the conversion. Se...
How to change column datatype from character to numeric in PostgreSQL 8.4
...s an assignment cast from old data type to new. A USING clause must be provided if there is no implicit or assignment cast from old to new type.
So this might work (depending on your data):
alter table presales alter column code type numeric(10,0) using code::numeric;
-- Or if you prefer standard...
System.currentTimeMillis vs System.nanoTime
...me (perhaps in
the future, so values may be
negative). This method provides
nanosecond precision, but not
necessarily nanosecond accuracy. No
guarantees are made about how
frequently values change. Differences
in successive calls that span greater
than approximately 292 years (263
...
When does System.getProperty(“java.io.tmpdir”) return “c:\temp”
...e TEMP will be ignored. Please, refer to my answer and let me know if you didn't understood what I mean.
– Zakaria
Apr 18 '15 at 11:43
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Completion handler for UINavigationController “pushViewController:animated”?
...: Bool,
completion: @escaping (() -> Void)?) {
CATransaction.begin()
CATransaction.setCompletionBlock(completion)
pushViewController(viewController, animated: animated)
CATransaction.commit()
}
}
Usage:
navigationController?.pushViewControll...
How do you create optional arguments in php?
...lue = null) I found this better option.
– Mohammad Zaid Pathan
Aug 19 '19 at 14:31
add a comm...
Is generator.next() visible in Python 3?
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any idea why python 2 eschewed the dunder convention for these methods in the first place?
– Rick supports Monica
Mar 29 '16 at 14:47
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