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In Objective-C why should I check if self = [super init] is not nil?
... of the nullability specifiers? If my superclass's initializer is non-null then is it really still worth the extra clutter to check? (Although NSObject itself doesn't seem to have any for its -init afaict…)
– natevw
Dec 17 '15 at 18:14
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What causes a TCP/IP reset (RST) flag to be sent?
...t as offline as soon as connection closure or reset is being detected. And then sometimes they don't bother to give a client a chance to reconnect. This is obviously not completely correct.
– Victor Yarema
Aug 6 at 15:38
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PreparedStatement with list of parameters in a IN clause [duplicate]
...ilder.length() -1 ).toString() + ")";
PreparedStatement pstmt = ...
And then happily set the params
int index = 1;
for( Object o : possibleValue ) {
pstmt.setObject( index++, o ); // or whatever it applies
}
share
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RequestDispatcher.forward() vs HttpServletResponse.sendRedirect()
...ansfer to new server or context, and it is treated as completely new task, then we go for sendRedirect.
Generally, a forward should be used if the operation can be safely repeated upon a browser reload of the web page and will not affect the result.
Source
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Check status of one port on remote host [closed]
... for a batch file on Windows that will check the status of the remote port then run a command that uses that remote port for information, then the remote port check command again, then the command that uses that port on the next server for information, and so on. I've looked everywhere and thought t...
MySQL OPTIMIZE all tables?
...ks
It runs a show tables statement and stores it in a prepared statement. Then it runs a optimize table in the selected set.
You can control which tables to optimize by setting a different value in the var @tables_like (e.g.: set @tables_like = '%test%';).
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OS X Bash, 'watch' command
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There is no better way then using the watch command directly.
– Oliver
Aug 25 '13 at 10:05
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Parsing XML with namespace in Python via 'ElementTree'
...rt, looks up the corresponding namespace URL in the namespaces dictionary, then changes the search to look for the XPath expression {http://www.w3.org/2002/07/owl}Class instead. You can use the same syntax yourself too of course:
root.findall('{http://www.w3.org/2002/07/owl#}Class')
If you can sw...
Sublime Text 2 keyboard shortcut to open file in specified browser (e.g. Chrome)
...t and you should see a new Chrome option in the build list. Select it, and then you should be able to launch Chrome with Cmd+B on a Mac (or whatever hotkey you have configured for build, maybe its F7 or Ctrl+B on a Windows machine)
At least this should give you a push in the right direction.
Edit:...
How to avoid “cannot load such file — utils/popen” from homebrew on OSX
..., upgrade to El Capitan broke it, I had to reset the permissions first and then run the git commands and brew update worked. Thanks.
– Bob
Mar 15 '16 at 18:08
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