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How can I pad an integer with zeros on the left?
...g.format("%05d", yournumber);
for zero-padding with a length of 5. For hexadecimal output replace the d with an x as in "%05x".
The full formatting options are documented as part of java.util.Formatter.
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Create a “with” block on several context managers? [duplicate]
Suppose you have three objects you acquire via context manager, for instance A lock, a db connection and an ip socket.
You can acquire them by:
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How to join strings in Elixir?
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The alternative syntax using the pipeline operator: ["StringA", "StringB"] |> Enum.join " "
– Ryan Cromwell
Dec 31 '13 at 2:26
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How to use JavaScript variables in jQuery selectors?
...nts via button clicks. I would opt for using data-attributes instead. For example
<input id="bx" type="text">
<button type="button" data-target="#bx" data-method="hide">Hide some input</button>
Then, in your JavaScript
// using event delegation so no need to wrap it in .ready()...
Finding ALL duplicate rows, including “elements with smaller subscripts”
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duplicated has a fromLast argument. The "Example" section of ?duplicated shows you how to use it. Just call duplicated twice, once with fromLast=FALSE and once with fromLast=TRUE and take the rows where either are TRUE.
Some late Edit:
You didn't provide a repro...
How can I give eclipse more memory than 512M?
...as much memory as I'd like it to be able to use (between 2 and 4 gigs for example).
Open eclipse.ini in the Eclipse installation directory.
You should be able to change the memory sizes after -vmargs up to 1024 without a problem up to some maximum value that's dependent on your system. Here's that...
What is the difference between ng-app and data-ng-app?
...ly saying makes template valid HTML, or HTML Validator Compliant, without explaining what THOSE terms mean, either.
I do not know for sure, but I'm guessing that these terms apply to HTML validation programs that scan your code for standards compliance - kind of like lint. They do not recognize ng...
Regular expression to match standard 10 digit phone number
I want to write a regular expression for a standard US type phone number that supports the following formats:
20 Answers
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Get the closest number out of an array
...ordered but ok for small lists. Even without a binary search a loop could exit if the next number is further way.
– Dominic
Dec 19 '19 at 5:21
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Concatenating two lists - difference between '+=' and extend()
...o (maybe more) ways to concatenate lists in Python:
One way is to use the extend() method:
9 Answers
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