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java.lang.OutOfMemoryError: Java heap space
...to find out why your heap size is being eaten. NetBeans has a very good profiler included with it. I believe it uses the jvisualvm under the hood. With a profiler, you can try to find where many objects are being created, when objects get garbage collected, and more.
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Finding diff between current and last version
...ne commit, and git show HEAD~2, etc. for older commits. Show just a single file via git show HEAD~2 my_file.
– Florian Brucker
Mar 3 '16 at 10:43
add a comment
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Sequelize.js: how to use migrations and sync
...: sequelize migration:create
Write up and down functions in your migration file
According to your changes in migration file, change your model manually
Run sequelize db:migrate
Running migrations on production
Obviously you can't ssh to production server and run migrations by hands. Use umzug, fr...
Securely storing environment variables in GAE with app.yaml
... does not suit the project. Rather, I'd like to swap out the values from a file that is listed in .gitignore on each deployment of the app.
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Android Debug Bridge (adb) device - no permissions [duplicate]
...hing is returned)
Fixing it
OK. So what's the fix?
Add a rule
Create a file /etc/udev/rules.d/99-adb.rules containing the following line:
ATTRS{idVendor}=="18d1", ATTRS{idProduct}=="4e42", ENV{ID_GPHOTO2}="1",
ENV{GPHOTO2_DRIVER}="proprietary", ENV{ID_MEDIA_PLAYER}="1",
MODE="0664", GROUP="...
What is the bit size of long on 64-bit Windows?
...ws Data Types
The information is also available in various Windows header files like WinDef.h. I have listed a few relevant types here:
Type | S/U | x86 | x64
----------------------------+-----+--------+-------
BYTE, BOOLEAN | U | 8 bit | 8 bit
---------...
Reference — What does this symbol mean in PHP?
...epending on where they are used.
__LINE__: The current line number of the file.
__FILE__: The full path and filename of the file. If used inside an include, the name of the included file is returned. Since PHP 4.0.2, __FILE__ always contains an absolute path with symlinks resolved whereas in older...
How do I prevent commands from showing up in Bash history?
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In your .bashrc/.bash_profile/wherever you want, put export HISTIGNORE=' *'. Then just begin any command you want to ignore with one space.
$ ls # goes in history
$ ls # does not
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Static nested class in Java, why?
...Example for such kind of usage, you can find in Android R.java (resources) file.
Res folder of android contains layouts (containing screen designs), drawable folder (containing images used for project), values folder (which contains string constants), etc..
Sine all the folders are part of Res fold...
SPAN vs DIV (inline-block)
...ith any surrounding text but you may set properties such as width, height, etc. A span with the property display:block will not flow in the same way as an inline-block element but will create a carriage return and have default margin.
Note that inline-block is not supported in all browsers. For in...