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Delete an element from a dictionary
...a time when i wanted copies of the dictionary, i've always relied on 'everyones' copy being the same. great point.
– tMC
Apr 30 '11 at 21:38
30
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MySQL pagination without double-querying?
...g SQL_CALC_FOUND_ROWS with ORDER BY and LIMIT, according to the bug I mentioned.
– staticsan
May 4 '09 at 4:30
5
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Could not load file or assembly 'Newtonsoft.Json' or one of its dependencies. Manifest definition do
...still receiving the error above. It wasn't until I made the changes I mentioned that I was able to get it to work properly.
– CraigV
Jul 1 '14 at 17:56
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What is the difference between “text” and new String(“text”)?
... String s = "text"; may reuse an instance from the string constant pool if one is available.
You very rarely would ever want to use the new String(anotherString) constructor. From the API:
String(String original) : Initializes a newly created String object so that it represents the same sequenc...
Why are there no ++ and -- operators in Python?
...ine.
It's not a decision of whether it makes sense, or whether it can be done--it does, and it can. It's a question of whether the benefit is worth adding to the core syntax of the language. Remember, this is four operators--postinc, postdec, preinc, predec, and each of these would need to have i...
Foreach loop, determine which is the last iteration of the loop
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How about a good old fashioned for loop?
for (int i = 0; i < Model.Results.Count; i++) {
if (i == Model.Results.Count - 1) {
// this is the last item
}
}
Or using Linq and the foreach:
foreach (Item result in Model.Results...
Metadata file '.dll' could not be found
...s well and lead to very strange Visual Studio behaviour, so deleting it is one of the things I always try.
Note that deleting the .suo file will reset the startup project(s) of the solution.
More on the .suo file is here.
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PostgreSQL: Show tables in PostgreSQL
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\dt is very useful. That pg_catalog.pg_tables one is much less so, as it appears to lump internal tables together with the user-created ones for whatever database you happen to be connected to.
– aroth
Jul 29 '13 at 6:25
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Using group by on multiple columns
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Group By X means put all those with the same value for X in the one group.
Group By X, Y means put all those with the same values for both X and Y in the one group.
To illustrate using an example, let's say we have the following table, to do with who is attending what subject at a univers...
When to use LinkedList over ArrayList in Java?
I've always been one to simply use:
33 Answers
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