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MySQL error 2006: mysql server has gone away
...r to be a very low default setting of max_allowed_packet.
Raising it in /etc/my.cnf (under [mysqld]) to 8 or 16M usually fixes it. (The default in MySql 5.7 is 4194304, which is 4MB.)
[mysqld]
max_allowed_packet=16M
Note: Just create the line if it does not exist
Note: This can be set on you...
Detect Retina Display
...ale >= 2.0))
Then in any file you can just do:
if(IS_RETINA)
{
// etc..
}
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How to run a Python script in the background even after I logout SSH?
...hat you can send signals to the process later. in some shells (bash, zsh, etc.) after you do somecommand & it will print the pid like [1] 12345. otherwise you can use $!.
– Tony Beta Lambda
Mar 28 '18 at 4:17
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How to extract the hostname portion of a URL in JavaScript
...b.domain.com/v1/Default.aspx or sub.domain.com/v2/Products/Default.aspx , etc. How I can get value /v2, the root for my application sub.domain.com/v2 ?
– Kiquenet
Oct 6 '15 at 8:13
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Is there a query language for JSON?
...ons inside the delegate as you can imagine: simple comparison, startsWith, etc. I haven't tested but you could probably nest filters too for querying inner collections.
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How to exit from PostgreSQL command line utility: psql
...working in pgsql it'll work in most your other unix shells (python, mysql, etc). If you always do things the "standard" way in 'nix your brain will be less cluttered with trivia.
– hobs
Nov 7 '13 at 22:10
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How to get ERD diagram for an existing database?
... use dbeaver to do this. It allows you to export the ER diagram as png/svg etc.
DBeaver - https://dbeaver.io/
Double click on a schema (eg, Schemas->public->Tables) and open the "ER Diagram" tab (next to "Properties" tab)
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Is it possible to preview stash contents in git?
...0} to see a specific stash. 0 shows the last tone, 1 the second last one.. etc. git stash list will show all the available.
– brita_
Jul 18 '14 at 21:13
7
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Revert to Eclipse default settings
...tings - this way I was able to preserve my workspace settings (source code etc)
Going forward I would recommend downloading the Eclipise Color Theme Plugin from http://www.eclipsecolorthemes.org/ - This allows you to switch between a range of color themes easily, and easily switch back to 'Default'...
How to get multiple select box values using jQuery?
... $(el).text();
return $(el).data("mydata");
return $(el).prop("disabled");
etc...
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