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How can we match a^n b^n with Java regex?
...nd in our setup we can always match it again (e.g. if we captured bbb last time, we're guaranteed that there will still be bbb, but there may or may not be bbbb this time).
Lesson: Beware of backtracking. The regex engine will do as much backtracking as you allow until the given pattern matches. Thi...
How to remove spaces from a string using JavaScript?
...place(/\s+/g, '')
On small texts this is not relevant, but for cases when time is important, e.g. in text analisers, especially when interacting with users, that is important.
On the other hand, \s+ handles wider variety of space characters. Among with \n and \t, it also matches \u00a0 character...
Creating a daemon in Linux
...LD, SIG_IGN);
signal(SIGHUP, SIG_IGN);
/* Fork off for the second time*/
pid = fork();
/* An error occurred */
if (pid < 0)
exit(EXIT_FAILURE);
/* Success: Let the parent terminate */
if (pid > 0)
exit(EXIT_SUCCESS);
/* Set new file permissio...
Where are static variables stored in C and C++?
... draft [standard].
Memory Area Characteristics and Object Lifetimes
-------------- ------------------------------------------------
Const Data The const data area stores string literals and
other data whose values are known at compile
...
Do zombies exist … in .NET?
... excel using a backgroundworker i didnt released all the resources all the time (because i just skipped debugging etc). in the taskmanager i saw afterwards about 50 excel processes. did i create zombieexcelprocesses?
– Stefan
Nov 19 '13 at 11:18
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Are there benefits of passing by pointer over passing by reference in C++?
...jects. And it will suggest that the argument can be NULL when, most of the time, a NULL value should be forbidden. Read litb's answer for a complete answer.
– paercebal
Dec 3 '08 at 10:12
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What are the best practices for SQLite on Android?
...connection. Even if you use it from multiple threads, one connection at a time. The SqliteDatabase object uses java locks to keep access serialized. So, if 100 threads have one db instance, calls to the actual on-disk database are serialized.
So, one helper, one db connection, which is serialize...
Add … if string is too long PHP [duplicate]
...t desired for mobile browsers. What's more, you send full text, while some times it should not be available.
– szamil
Feb 11 '14 at 11:36
17
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Case preserving substitute in Vim
...
You can just paste and adapt this:
(Of course, if you do this from time to time, you will want a plugin instead of this monstrosity. But for some who are in a hurry and only need it once, this is a quick hack for your pasting pleasure:)
:%s/\cbad\zejob/\= ( submatch(0)[0] is# toupper(subma...
Is String.Contains() faster than String.IndexOf()?
...ontains() calls, 2.5 sec for all IndexOf() calls. => IndexOf performs 5 times faster!! (.Net 4.8)
– CSharper
Sep 21 at 7:55
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