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Why are Oracle table/column/index names limited to 30 characters?
..., but there is always a case that turns up where we hit this limit - especially in naming foreign keys.
10 Answers
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PostgreSQL naming conventions
.... Postgresql treats identifiers case insensitively when not quoted (it actually folds them to lowercase internally), and case sensitively when quoted; many people are not aware of this idiosyncrasy. Using always lowercase you are safe. Anyway, it's acceptable to use camelCase or PascalCase (or UPPER...
What does “pending” mean for request in Chrome Developer Window?
... I've seen the same thing in Chrome with the TamperMonkey extension installed.
– sstn
Sep 18 '15 at 12:24
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Split string into array of character strings
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This is indeed a regex-expression, called a negative lookahead. Checkout the documentation here: docs.oracle.com/javase/6/docs/api/java/util/regex/…
– Erwin
May 28 '14 at 8:51
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What is the difference between pull and clone in git?
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They're basically the same, except clone will setup additional remote tracking branches, not just master. Check out the man page:
Clones a repository into a newly created directory, creates remote-tracking branches for each branch in ...
IPC performance: Named Pipe vs Socket
...peed testing, you should try socat, which is a very versatile program that allows you to create almost any kind of tunnel.
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How do I clear/delete the current line in terminal?
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The line deleted by Ctrl-U is recallable with Ctrl-Y, too.
– keks
Dec 4 '12 at 10:59
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How to convert an Int to a String of a given length with leading zeros to align?
...this Q&A becomes the canonical compendium,
scala> import java.text._
import java.text._
scala> NumberFormat.getIntegerInstance.asInstanceOf[DecimalFormat]
res0: java.text.DecimalFormat = java.text.DecimalFormat@674dc
scala> .applyPattern("0000000")
scala> res0.format(123)
res2: S...
.NET data structures: ArrayList, List, HashTable, Dictionary, SortedList, SortedDictionary — Speed,
...d Visual Basic books talk about them to a certain extent, but they never really go into any real detail.
13 Answers
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What are the drawbacks of Stackless Python? [closed]
...and it seems to have many advantages compared with vanilla cPython. It has all those cool features like infinite recursion, microthreads, continuations, etc. and at the same time is faster than cPython (around 10%, if the Python wiki is to be believed) and compatible with it (at least versions 2...