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Sequence contains no matching element

...g about the others anyway. On the other hand, it looks like you might actually be better off with a join here in the first place. If you didn't care that it would do all matches (rather than just the first) you could use: var query = from target in _lstAcl.Documents join source in _dsA...
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Getting a better understanding of callback functions in JavaScript

I understand passing in a function to another function as a callback and having it execute, but I'm not understanding the best implementation to do that. I'm looking for a very basic example, like this: ...
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How to avoid 'cannot read property of undefined' errors?

... Catching all exceptions without re-throwing is bad, and generally using exceptions as part of the expected flow of execution is also not great -- even though in this case it's pretty well contained. – hugo ...
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How do you read CSS rule values with JavaScript?

I would like to return a string with all of the contents of a CSS rule, like the format you'd see in an inline style. I'd like to be able to do this without knowing what is contained in a particular rule, so I can't just pull them out by style name (like .style.width etc.) ...
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How to hash some string with sha256 in Java?

... SHA-256 isn't an "encoding" - it's a one-way hash. You'd basically convert the string into bytes (e.g. using text.getBytes(StandardCharsets.UTF_8)) and then hash the bytes. Note that the result of the hash would also be arbitrary binary data, and if you want to represent that in a strin...
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Mercurial (hg) commit only certain files

...of hg having auto-add whenever I try to commit a change it wants to commit all files. But I don't want that because certain files are not "ready" yet. ...
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How to replace all dots in a string using JavaScript

I want to replace all the occurrences of a dot( . ) in a JavaScript string 15 Answers ...
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How to search for a part of a word with ElasticSearch

... to 50 letters. Adjust the max_gram as you need. In german words can get really big, so I set it to a high value. share | improve this answer | follow | ...
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How to Select Every Row Where Column Value is NOT Distinct

I need to run a select statement that returns all rows where the value of a column is not distinct (e.g. EmailAddress). 7 A...
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What's the difference between IEquatable and just overriding Object.Equals()?

...t you avoid a cast from System.Object which can make a difference if it's called frequently. As noted on Jared Parson's blog though, you still must implement the Object overrides. share | improve t...