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PostgreSQL LIKE query performance variations

...ull Text Search with its full text indexes is not for the LIKE operator at all, it has its own operators and doesn't work for arbitrary strings. It operates on words based on dictionaries and stemming. It does support prefix matching for words, but not with the LIKE operator: Get partial match fro...
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How to set breakpoints in inline Javascript in Google Chrome?

When I open Developer Tools in Google Chrome, I see all kinds of features like Profiles, Timelines, and Audits, but basic functionality like being able to set breakpoints both in js files and within html and javascript code is missing! I tried to use the javascript console, which itself is buggy - f...
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What does SynchronizationContext do?

...t. The running thread can be associated with a synchronization context by calling the static SynchronizationContext.SetSynchronizationContext method, and the current context of the running thread can be queried via the SynchronizationContext.Current property. Despite what I just wrote (each thread h...
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Turning multi-line string into single comma-separated

... awk: invalid -v option :( – Marsellus Wallace Jun 15 '15 at 17:38 6 Add a space bet...
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Test a weekly cron job [closed]

... This really shouldn't have been upvoted and accepted, beyond running the script it does nothing to tell you whether the script will actually work when run from cron. Use the excellent crontest script in one of the other answers to t...
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How do I save a stream to a file in C#?

... Note that you have to call myOtherObject.InputStream.Seek(0, SeekOrigin.Begin) if you're not already at the beginning or you won't copy the entire stream. – Steve Rukuts Mar 22 '12 at 12:00 ...
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Is it safe to get values from a java.util.HashMap from multiple threads (no modification)?

...ting thread makes the reference to the map visible to other threads. Basically, the only possible race here is between the construction of the HashMap and any reading threads that may access it before it is fully constructed. Most of the discussion is about what happens to the state of the map obje...
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proper way to sudo over ssh

...ssh -t user@server "sudo script" See man ssh: -t Force pseudo-tty allocation. This can be used to execute arbi- trary screen-based programs on a remote machine, which can be very useful, e.g., when implementing menu services. Multiple -t options force tty alloca...
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Best practices for API versioning? [closed]

...e same time the most prominent part of a REST API and, therefore, a potentially long-term commitment towards the users of that API. Since evolution of an application and, to a lesser extent, its API is a fact of life and that it's even similar to the evolution of a seemingly complex product like a ...
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Java List.contains(Object with field value equal to x)

... @EricJablow Perhaps you should comment on ALL of the answers that don't perform null checks, as opposed to just one (mine). – Josh M Sep 17 '13 at 20:53 ...