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Does Java have something like C#'s ref and out keywords?
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That is not 100% true, If you pass in an array or a class the reference to the array or object is passed in by value, You can change internals to the array or object and it will be reflected in the caller.
– Romain Hippeau
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How do I force Postgres to use a particular index?
...om_page_cost = 1;
EXPLAIN <query>; # May use index scan now
You can restore the default value with SET random_page_cost = DEFAULT; again.
Background
Index scans require non-sequential disk page fetches. Postgres uses random_page_cost to estimate the cost of such non-sequential...
How to get the IP address of the docker host from inside a docker container
... wanted to connect to a remote xdebug server:
telnet 192.168.46.49 9000
Now when traffic comes into your Mac addressed for 192.168.46.49 (and all the traffic leaving your container does go through your Mac) your Mac will assume that IP is itself. When you are finish using this IP, you can remove ...
How to add leading zeros for for-loop in shell? [duplicate]
...ates that this feature got introduced with bash-4.0-alpha: Brace expansion now allows zero-padding of expanded numeric values and will add the proper number of zeroes to make sure all values contain he same number of digits.).
– Adrian Frühwirth
Feb 13 '15 at ...
How do I scale a stubborn SVG embedded with the tag?
...tributes of the SVG tag and it seemed to work.
Save the SVG and it should now scale as expected.
I found this information here:
https://blueprints.launchpad.net/inkscape/+spec/allow-browser-resizing
share
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Where is the Keytool application?
...\Program Files\Java\jdk1.8.0_121\bin
It is used for managing keys and certificates you can sign things with, in your case, probably a jar file.
If you provide more details of what you need to do, we could probably give you a more specific answer.
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Efficiently updating database using SQLAlchemy ORM
...d plain SQL in the same transaction. Basically, from one side, ORM data modifications will only hit the database when you flush the changes from your session. From the other side, SQL data manipulation statements don't affect the objects that are in your session.
So if you say
for c in session.que...
Batch file include external file for variables
...ead
set input=1
set input2=2
set /p input=INPUT:
set /p input2=INPUT2:
Now, we need to write the variables to a file.
(echo %input%)> settings.cdb
(echo %input2%)>> settings.cdb
pause
I use .cdb as a short form for "Command Database". You can use any extension.
The next section is to...
Resolving ambiguous overload on function pointer and std::function for a lambda using +
...ked up by an argument by Daniel Krügler, this unary + trick should be specified behaviour, i.e. you can rely on it (see discussion in the comments).
Still, I'd recommend using an explicit cast to the function pointer type if you want to avoid the ambiguity: you don't need to ask on SO what is does...
java.lang.UnsupportedClassVersionError: Bad version number in .class file?
...r when I include an opensource library that I had to compile from source. Now, all the suggestions on the web indicate that the code was compiled in one version and executed in another version (new on old). However, I only have one version of JRE on my system. If I run the commands:
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