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How do I add a placeholder on a CharField in Django?
Take this very simple form for example:
8 Answers
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Ruby: How to post a file via HTTP as multipart/form-data?
I want to do an HTTP POST that looks like an HMTL form posted from a browser. Specifically, post some text fields and a file field.
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Linq: What is the difference between Select and Where
...ilable in Linq. What should every developer know about these two methods? For example: when to use one over the other, any advantages of using one over the other, etc.
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How to write a bash script that takes optional input arguments?
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You could use the default-value syntax:
somecommand ${1:-foo}
The above will, as described in Bash Reference Manual - 3.5.3 Shell Parameter Expansion [emphasis mine]:
If parameter is unset or null, the expansion of word is substituted. Ot...
How to change the author and committer name and e-mail of multiple commits in Git?
...d committing the changes to Git (in a repo that was in my pendrive, cloned from my computer at home). After several commits I realized I was committing stuff as the root user.
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How to convert CSV file to multiline JSON?
Here's my code, really simple stuff...
10 Answers
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Float vs Decimal in ActiveRecord
Sometimes, Activerecord data types confuse me. Err, often. One of my eternal questions is, for a given case,
3 Answers
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How to convert a string with comma-delimited items to a list in Python?
...)
>>> text
[ 'a', 'b', 'c' ]
Alternatively, you can use eval() if you trust the string to be safe:
>>> text = 'a,b,c'
>>> text = eval('[' + text + ']')
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What's the difference between getPath(), getAbsolutePath(), and getCanonicalPath() in Java?
What's the difference between getPath() , getAbsolutePath() , and getCanonicalPath() in Java?
6 Answers
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How to darken a background using CSS?
... text in it. Whenever I decrease the opacity, then I decrease the opacity of the WHOLE body. Is there any way I can just make the background-image darker, and not everything else?
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