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How to copy Java Collections list
...ist.set(int,E) thus element 0 will over write element 0 in the target list etc etc. Not particularly clear from the javadocs I'd have to admit.
List<String> a = new ArrayList<>(a);
a.add("foo");
b.add("bar");
List<String> b = new ArrayList<>(a); // shallow copy 'a'
// the ...
Redis cache vs using memory directly
... storing the data in local memory (since it involves socket roundtrips to fetch/store the data). However, it also brings some interesting properties:
Redis can be accessed by all the processes of your applications, possibly running on several nodes (something local memory cannot achieve).
Redis me...
Java's L number (long) specification
...Editor, IDE, looking at the source on the web (review tools, repositories, etc..). IMHO the priority is not to miss the Shift key. Btw. what font do you recommend? I like monospace and it's the default almost in all editors, CLIs etc that I've see and in this font l and 1 (0 and O resp.) are fairly...
Get first key in a (possibly) associative array?
...just iterates a pointer, similar to using the more low-level next, current etc.
– troelskn
Mar 27 '14 at 8:34
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show 3 more comments
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How to get div height to auto-adjust to background size?
...ore hand which you usually do. This will let you add overlay text, titles etc. with no negative padding or absolute positioning of the image. They key is to set the padding % to match the image aspect ratio as seen in the example below. I used this answer and essentially just added an image backgr...
Rails: Missing host to link to! Please provide :host parameter or set default_url_options[:host]
...s.
In each of your environment files (e.g. development.rb, production.rb, etc.) you can specify the default_url_options to use for action_mailer:
config.action_mailer.default_url_options = { host: 'lvh.me', port: '3000' }
However, these are not set for MyApp:Application.default_url_options:
$ M...
How to debug Lock wait timeout exceeded on MySQL?
...-----+-------+
1 row in set (0.01 sec)
You can set it to higher value in /etc/my.cnf permanently with this line
[mysqld]
innodb_lock_wait_timeout=120
and restart mysql. If you cannot restart mysql at this time, run this:
SET GLOBAL innodb_lock_wait_timeout = 120;
You could also just set it for t...
What's the best way to distribute Java applications? [closed]
... (create start menu entries, launchers, register with add/remove programs, etc.) and already bundles a Java runtime (so the user does not need to know or care about it). I would like to suggest our cross platform installation tool, BitRock InstallBuilder. Although it is not Java-based, it is commonl...
How to use CMAKE_INSTALL_PREFIX
...(should be /foo/bar/bubba
-- The C compiler identification is GNU 4.4.7
-- etc, etc,...
CIP = /usr/local (should be /foo/bar/bubba
CIP = /foo/bar/bubba (should be /foo/bar/bubba
-- Configuring done
-- Generating done
Second run
CIP = /foo/bar/bubba (should be /foo/bar/bubba
CIP = /foo/bar/bubba (...
SQL Server - stop or break execution of a SQL script
...e multiple blocks within Begin..End? Meaning STATEMENT; GO; STATEMENT; GO; etc etc? I'm getting errors and I guess that might be the reason.
– Joel Peltonen
May 6 '14 at 12:48
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