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Which characters are valid/invalid in a JSON key name?
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Can anyone clarify if this includes things like the Unicode null character (U+0000, plain "null byte" in UTF-8), etc? The both json.org and the linked official/formal ECMA specification PDF seem to imply that yes, those are valid in JSON, even in their...
RegEx to parse or validate Base64 data
...4 alphabet (note that there are URL-safe and other such variant encodings) including the newlines and colons, and take what's left.
– Jonathan Leffler
Jan 24 '09 at 4:11
add a...
Compare if BigDecimal is greater than zero
...t way around. Perhaps the fact that recently added classes, like LocalDate include isBefore is an indication that Oracle feel the same way. It's not ideal, but I think it's marginally more readable in these circumstances to write a utility isGreaterThan method.
– Mark Slater
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What do I use for a max-heap implementation in Python?
Python includes the heapq module for min-heaps, but I need a max heap. What should I use for a max-heap implementation in Python?
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Error message “No exports were found that match the constraint contract name”
... This extension does this automatically for you with one click (including restarting VS): Clear MEF Component Cache visualstudiogallery.msdn.microsoft.com/…
– kzu
Sep 1 '16 at 16:24
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How to get first and last day of previous month (with timestamp) in SQL Server
... format (code 120).
To actually calculate the values that you requested, include the following in your SQL.
Copy, paste...
DECLARE
@FirstDayOfLastMonth DATETIME = CONVERT(DATE, DATEADD(d, -( DAY(DATEADD(m, -1, GETDATE() - 2)) ), DATEADD(m, -1, GETDATE() - 1)))
, @LastDayOfLastMonth ...
Match everything except for specified strings
...r blue anywhere in it. For that, anchor the regular expression with ^ and include .* in the negative lookahead:
^(?!.*(red|green|blue))
Also, suppose that you want lines containing the word "engine" but without any of those colors:
^(?!.*(red|green|blue)).*engine
You might think you can facto...
Make iframe automatically adjust height according to the contents without using scrollbar? [duplicat
... src="some-iframe-content.html"></iframe>
Note if you prefer to include the Javascript in the <head> of the document then you can revert to using an inline onload attribute in the iframe HTML, as in the dyn-web web page.
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SQL Server - transactions roll back on error?
...k in case of Error
-- you can Raise ERROR with RAISEERROR() Statement including the details of the exception
RAISERROR(ERROR_MESSAGE(), ERROR_SEVERITY(), 1)
END CATCH
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Java equivalent of C#'s verbatim strings with @
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@ace: Updated to the current "string" article, which includes a section on verbatim string literals. Also updated Groovy links.
– Jon Skeet
Oct 22 '18 at 9:35
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