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How to escape single quotes within single quoted strings
...and (2), or between (4) and (5), the shell will interpret that string as a one long word.
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How to remove “Server name” items from history of SQL Server Management Studio
...st.
Note that if you have multiple entries for a single server name (e.g. one with Windows and one with SQL Auth), you won't be able to tell which one you're deleting.
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Why does one often see “null != variable” instead of “variable != null” in C#?
...@Benjol Don't forget to always supply an empty else { } clause in case someone needs to add something there later and forgets to write the else keyword themselves. (Joke)
– Jeppe Stig Nielsen
May 3 '13 at 21:42
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Can I create more than one repository for github pages?
...any way that I can create more to host multiple blogs?Am I limited to just one repository for hosting(since username.github.com can only be used once?)
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Hibernate throws MultipleBagFetchException - cannot simultaneously fetch multiple bags
... the thing is, hibernate can't fetch the two collections with one query. So when you query for the parent entity, it will need 2 extra queries per result, which is normally something you don't want.
– Bozho
Jun 18 '12 at 11:19
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MongoDB relationships: embed or reference?
... records will refer to the same data it is more efficient and less error prone to update a single record and keep references to it in other places.
Document size considerations
MongoDB imposes a 4MB (16MB with 1.8) size limit on a single document. In a world of GB of data this sounds small, but it...
What is meant by immutable?
...ns you can pass references to the object around, without worrying that someone else is going to change its contents. Especially when dealing with concurrency, there are no locking issues with objects that never change
e.g.
class Foo
{
private final String myvar;
public Foo(final String ...
How to match “anything up until this sequence of characters” in a regular expression?
...or of regex you're using, but this will
work in any of the most popular ones that can be considered "complete".
/.+?(?=abc)/
How it works
The .+? part is the un-greedy version of .+ (one or more of
anything). When we use .+, the engine will basically match everything.
Then, if there ...
Nearest neighbors in high-dimensional data?
...ps not the nearest neighbor); in doing so, you reduce complexity. You mentioned the kd-tree; that is one example. But as you said, kd-tree works poorly in high dimensions. In fact, all current indexing techniques (based on space partitioning) degrade to linear search for sufficiently high dimensions...
Quick-and-dirty way to ensure only one instance of a shell script is running at a time
What's a quick-and-dirty way to make sure that only one instance of a shell script is running at a given time?
40 Answers
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