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How can I convert ereg expressions to preg in PHP?
...o]', $str);
preg_match('(^hello)', $str);
preg_match('{^hello}', $str);
// etc
If your delimiter is found in the regular expression, you have to escape it:
ereg('^/hello', $str);
preg_match('/^\/hello/', $str);
You can easily escape all delimiters and reserved characters in a string by using pr...
Use tnsnames.ora in Oracle SQL Developer
... $TNS_ADMIN/tnsnames.ora
TNS_ADMIN lookup key in the registry
/etc/tnsnames.ora ( non-windows )
$ORACLE_HOME/network/admin/tnsnames.ora
LocalMachine\SOFTWARE\ORACLE\ORACLE_HOME_KEY
LocalMachine\SOFTWARE\ORACLE\ORACLE_HOME
If your tnsnames.ora file is not getting ...
How to call an external command?
...can get the stdout, stderr, the "real" status code, better error handling, etc...).
The official documentation recommends the subprocess module over the alternative os.system():
The subprocess module provides more powerful facilities for spawning new processes and retrieving their results; usin...
How does password salt help against a rainbow table attack?
...gainst entry A, then "md5(salt[b] . attempt[0])", compare against entry B, etc. Now I have n times as much work to do, where n is the number of usernames and passwords contained in the file.
To understand the second one, you have to understand what a rainbow table is. A rainbow table is a large lis...
Reason for Column is invalid in the select list because it is not contained in either an aggregate f
...f the grouping criteria, nor appear in aggregate functions (SUM, MIN, MAX, etc.).
Fixing it might look like this:
SELECT a, MAX(b) AS x
FROM T
GROUP BY a
Now it's clear that you want the following result:
a x
--------
1 ghi
2 pqr
...
Can anyone explain IEnumerable and IEnumerator to me? [closed]
...tor yourself, since Array already does this. E.g. foreach(Car c in carLot.getCars()) { ... }
– Nick Rolando
Jun 27 '19 at 19:57
...
Detecting design mode from a Control's constructor
... can also do it by checking process name:
if (System.Diagnostics.Process.GetCurrentProcess().ProcessName == "devenv")
return true;
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Android multiple email attachments using Intent
... Android program to send email with an attachment (image file, audio file, etc) using Intent with ACTION_SEND . The program is working when email has a single attachment. I used Intent.putExtra(android.content.Intent.EXTRA_STREAM, uri) to attach the designated image file to the mail and it is wor...
Git mergetool generates unwanted .orig files
...hough, if you like it you will probably absolutely love tools like p4Merge etc.
– Tim Jarvis
Jun 17 at 3:57
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How to show the text on a ImageButton?
... place the drawable at the top of the button, drawableRight at the bottom, etc.
– Cristian
Oct 25 '12 at 12:11
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