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In log4j, does checking isDebugEnabled before logging improve performance?
...g statement you will already have the check in place.
2- You don't have to selectively include the statement on "complex" debug statements. All statements are included that way.
3- Calling log.debug executes the following before logging:
if(repository.isDisabled(Level.DEBUG_INT))
retur...
Convert a bitmap into a byte array
...y answer with some discussion about why not to use ImageConverter, as your selected answer suggests, as well as the addition of disposal.
– Christopher Currens
Sep 8 '11 at 16:39
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Are PostgreSQL column names case-sensitive?
...ife: ("first_Name")
So, yes, PostgreSQL column names are case-sensitive:
SELECT * FROM persons WHERE "first_Name" = 'xyz';
Also fix the incorrect double-quotes around 'xyz'. Values (string literals) are enclosed in single quotes.
Read the manual here.
My standing advice is to use legal, lower...
How do you disable browser Autocomplete on web form field / input tag?
...(e.g. IE 11 & IE Edge). As soon as the readonly is removed, subsequent selection of the field results in the autocomplete returning.
– Gone Coding
Aug 26 '16 at 14:18
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How do I view an older version of an SVN file?
...itch to another branch/tag/revision. Besides the revision field, you click select, and you'll see all the versions of that file.
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Eclipse - no Java (JRE) / (JDK) … no virtual machine
...e button Environment Variables, in the System Variables list at the bottom select Path (no, not Classpath), click Edit and add ;c:\path\to\jdk\bin to the end of the value.
Alternatively and if not present, you can also add JAVA_HOME environment variable and make use of it in the PATH. In the same d...
How to grep for two words existing on the same line? [duplicate]
...if performance really matters. If you run two commands, you should aim to select the less frequently occurring word in the first grep to minimize the amount of data processed by the second.
Diagnosis
The initial script is:
grep -c "word1" | grep -r "word2" logs
This is an odd command sequence....
How I can delete in VIM all text from current line to end of file?
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Just add another way , in normal mode , type ctrl+v then G, select the rest, then D, I don't think it is effective , you should do like @Ed Guiness, head -n 20 > filename in linux.
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Unmount the directory which is mounted by sshfs in Mac [closed]
...ne can also locate the volume created by sshfs in Finder, right-click, and select Eject. Which is, to the best of my knowledge, the GUI version of the above command.
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How to hide databases that I am not allowed to access
...her DBs.
In pgAdmin III
make sure you are disconnected from the server,
select the Server, right click -> properties, Advanced tab,
in 'DB restriction' type in the name of your database(s) enclosed in single quotes and separated by spaces.
E.g.
'dback447'
Update for pgAdmin 4 - Do not us...