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Does setting Java objects to null do anything anymore?
... by Peter Hagger. In the performance section, there is a recommendation to set object references to null when no longer needed.
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Open a project in a new window in IntelliJ after “accidentally” clicking remember decision
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It can be changed in in File | Settings/Preferences | Appearance & Behavior | System Settings | Project Opening (or, before version 15, File | Settings/Preferences | General | Project Opening)
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Override configured user for a single git commit
...author is not necessarily the same as the committer. Git tracks both.
To set what name to use for just this repository, you could do:
git config user.name "Your Name"
git config user.email "Your email"
Notice the absence of the --global option. This will set the configuration in this reposit...
Xcode stops working after set “xcode-select -switch”
...ces… ➙ Locations and pick one of the options for Command Line Tools to set the location.
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How to get and set the current web page scroll position?
How can I get and set the current web page scroll position?
4 Answers
4
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How to change the default collation of a table?
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To change the default character set and collation of a table including those of existing columns (note the convert to clause):
alter table <some_table> convert to character set utf8mb4 collate utf8mb4_unicode_ci;
Edited the answer, thanks to the pr...
MySQL ERROR 1045 (28000): Access denied for user 'bill'@'localhost' (using password: YES)
...:1 |
| root | localhost |
+------+-----------+
4 rows in set (0.00 sec)
mysql> SELECT USER(), CURRENT_USER();
+----------------+----------------+
| USER() | CURRENT_USER() |
+----------------+----------------+
| bill@localhost | bill@% |
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“No X11 DISPLAY variable” - what does it mean?
... main display, then
export DISPLAY=:0.0
or if you're using csh or tcsh
setenv DISPLAY :0.0
before running your app.
Actually, I'm surprised it isn't set automatically. Are you trying to start this application from a non-graphic terminal? If not, have you modified the default .profile, .logi...
Difference between Iterator and Listiterator?
We can use Iterator to traverse a Set or a List or a Map . But ListIterator can only be used to traverse a List , it can't traverse a Set . Why?
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Is there any kind of hash code function in JavaScript?
Basically, I'm trying to create an object of unique objects, a set. I had the brilliant idea of just using a JavaScript object with objects for the property names. Such as,
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