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In a Django form, how do I make a field readonly (or disabled) so that it cannot be edited?
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As pointed out in this answer, Django 1.9 added the Field.disabled attribute:
The disabled boolean argument, when set to True, disables a form field using the disabled HTML attribute so that it won’t be editable by users. Even if a user tampers with the fie...
JavaScript equivalent to printf/String.Format
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ipython notebook clear cell output in code
...utput of a cell.
from IPython.display import clear_output
for i in range(10):
clear_output(wait=True)
print("Hello World!")
At the end of this loop you will only see one Hello World!.
Without a code example it's not easy to give you working code. Probably buffering the latest n events i...
How to check if running in Cygwin, Mac or Linux?
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11 Answers
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Counting occurrences in Vim without marking the buffer changed
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To avoid the substitution, leave the second pattern empty, and add the “n” flag:
:%s/patt...
SQL Server Text type vs. varchar data type [closed]
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If you're using SQL Server 2005 or later, use varchar(MAX). The text datatype is deprecated and...
How to pass an ArrayList to a varargs method parameter?
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edited Oct 10 '19 at 21:52
answered Mar 25 '12 at 20:27
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Preserve HTML font-size when iPhone orientation changes from portrait to landscape
...ebkit-text-size-adjust CSS property:
html {
-webkit-text-size-adjust: 100%; /* Prevent font scaling in landscape while allowing user zoom */
}
The use of this property is described further in the Safari Web Content Guide.
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Error in plot.new() : figure margins too large in R
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14 Answers
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Convert a list to a data frame
I have a nested list of data. Its length is 132 and each item is a list of length 20. Is there a quick way to convert this structure into a data frame that has 132 rows and 20 columns of data?
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