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Difference between a class and a module
... some constant
Some other conventions about modules:
Use one module in a file (like ruby classes, one class per ruby file)
What do Clustered and Non clustered index actually mean?
... that isn't the case. SQL Server certainly doesn't guarantee that all data files are laid out in a contiguous physical area of disc and there is zero file system fragmentation. It isn't even true that a clustered index is in order within the data file. The degree to which this isn't the case is the ...
How do I make an HTML text box show a hint when empty?
...JavaScript library like jQuery or YUI and put your code in an external .js-file.
But if you want a quick-and-dirty solution this is your inline HTML-solution:
<input type="text" id="textbox" value="Search"
onclick="if(this.value=='Search'){this.value=''; this.style.color='#000'}"
onblu...
Remote JMX connection
...0.1.1 or localhost it will not work and you will have to update /etc/hosts file.
hostname -i
Here is the command needed to enable JMX even from outside
-Dcom.sun.management.jmxremote
-Dcom.sun.management.jmxremote.authenticate=false
-Dcom.sun.management.jmxremote.ssl=false
-Dcom.sun.manageme...
How to pass all arguments passed to my bash script to a function of mine? [duplicate]
... or whatever's in $IFS), and also try to expand anything that looks like a filename wildcard into a list of matching filenames. This can have really weird effects, and should almost always be avoided.
share
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Passing additional variables from command line to make
Can I pass variables to a GNU Makefile as command line arguments? In other words, I want to pass some arguments which will eventually become variables in the Makefile.
...
CRON job to run on the last day of the month
...
This works great. In the crontab file the % must be escaped. So [ $(date -d +1day +\%d) -eq 1 ] && run_job
– ColinM
Sep 2 '14 at 14:27
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Convert Django Model object to dict with all of the fields intact
... the object
>>> obj_attrs = vars(obj)
>>> obj_attrs
{'_file_data_cache': <FileData: Data>,
'_state': <django.db.models.base.ModelState at 0x7f5c6733bad0>,
'aggregator_id': 24,
'amount': 5.0,
'biller_id': 23,
'datetime': datetime.datetime(2018, 1, 31, 18, 43,...
Convert integer to string Jinja
...ers. Btw, in my case I've got integers as strings coming from JSON content files: "hero_title_img_w": "111" and "hero_title_img2_w": "222". Then I'm adding them in .NJK file: {{ hero_title_img_w|int + hero_title_img2_w|int }} to use as image's width attribute. Hope it helps somebody one day.
...
HTTP redirect: 301 (permanent) vs. 302 (temporary)
... @BobStein-VisiBone for example of the 302 redirect: create a file old.php with the code <?php header("location: http://example.com/new.php"); ?> and file new.php - <?php echo 'I am new'; ?> and go to the link. There will redirect and display the text "I am new". Then replac...