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Knockout.js bound input value not updated when I use jquery .val('xyz')
... not trigger the change event. So, you can just do .val("blah").change() for KO to pick up the changes.
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How to replace captured groups only?
I have HTML code before and after the string:
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How to download and save a file from Internet using Java?
There is an online file (such as http://www.example.com/information.asp ) I need to grab and save to a directory. I know there are several methods for grabbing and reading online files (URLs) line-by-line, but is there a way to just download and save the file using Java?
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How to delete and replace last line in the terminal using bash?
I want to implement a progress bar showing elapsed seconds in bash. For this, I need to erase the last line shown on the screen (command "clear" erases all the screen, but I need to erase only the line of the progress bar and replace it with the new information).
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Can I make the foreign key field optional in Django model
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Sure, just add blank=True, null=True for each field that you want to remain optional like
subject = models.ForeignKey(subjects, blank=True, null=True)
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setup cron tab to specific time of during weekdays
...script at certain times of the day and on some specific days of the week. For example, we want to setup a cron job that runs the script with the following sequence:
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Extracting bits with a single multiplication
...simple example of getting a single byte manipulated. Using unsigned 8 bit for simplicity. Imagine your number is xxaxxbxx and you want ab000000.
The solution consisted of two steps: a bit masking, followed by multiplication. The bit mask is a simple AND operation that turns uninteresting bits to ze...
ggplot: How to increase spacing between faceted plots?
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This works without the grid package. In my experience the x labels of two side-by-side plots often overlap (the greatest label on the lhs and the smallest label on the rhs). One solution to fix the output is to ggsave with a greate...
How to spread django unit tests over multiple files?
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The behavior has changed in Django 1.6, so there is no longer a need to create a package. Just name your files test*.py.
From Django 1.7 documentation
When you run your tests, the default behavior of the test utility is
to find ...
Handle file download from ajax post
...sends ajax POST requests to a certain URL. Response might be a JSON string or it might be a file (as an attachment). I can easily detect Content-Type and Content-Disposition in my ajax call, but once I detect that the response contains a file, how do I offer the client to download it? I've read a nu...