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Is asynchronous jdbc call possible?
I wonder if there is a way to make asynchronous calls to a database?
16 Answers
16
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Can I set variables to undefined or pass undefined as an argument?
...t Javascript undefined & null.
Don't be confused about null. It generally makes sense and behaves similarly to other scripting languages' concepts of the out-of-band ‘null’, ‘nil’ or ‘None’ objects.
undefined, on the other hand, is a weird JavaScript quirk. It's a singleton object...
Counting the Number of keywords in a dictionary in python
... the len() function.
> a = {'foo':42, 'bar':69}
> len(a)
2
To get all the distinct words (i.e. the keys), use the .keys() method.
> list(a.keys())
['foo', 'bar']
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How to debug Apache mod_rewrite
...ng off. If you forget you'll fill your hard disk up fairly promptly, especially on a production server.
– John Hunt
May 21 '15 at 15:18
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Using Font Awesome icon for bullet points, with a single list item element
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The new fontawesome (version 4.0.3) makes this really easy to do. We simply use the following classes:
<ul class="fa-ul">
<li><i class="fa-li fa fa-check-square"></i>List icons (like these)</li>
<li><i class="fa-li fa fa-check-squ...
Matplotlib (pyplot) savefig outputs blank image
...values that depend whether or not T0 exists.
Second, after plt.show() is called, a new figure is created. To deal with this, you can
Call plt.savefig('tessstttyyy.png', dpi=100) before you call plt.show()
Save the figure before you show() by calling plt.gcf() for "get current figure", then you ca...
Confused about __str__ on list in Python [duplicate]
Coming from a Java background, I understand that __str__ is something like a Python version of toString (while I do realize that Python is the older language).
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Different bash prompt for different vi editing mode?
...e-in-prompt on
into /etc/inputrc or ~/.inputrc (thx stooj) should affect all your readline-enabled programs ;)
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Publish to S3 using Git?
...we wanted). Next create an S3 bucket to store your repository in, let’s call it git-repos, and then create a git repository to upload:
s3cmd mb s3://git-repos
mkdir chef-recipes
cd chef-recipes
git init
touch README
git add README
git commit README
git remote add origin amazon-s3://.jgit@git-repo...
Paging with Oracle
... them 100 per page. Currently I have one stored procedure which retrieves all quarter of a million records to a dataset using a data adapter, and dataset, and the dataadapter.Fill(dataset) method on the results from the stored proc. If I have "Page Number" and "Number of records per page" as integ...