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What's the difference between django OneToOneField and ForeignKey?
...Publisher: Apress Publishing>
>>> b.publisher.website
u'http://www.apress.com/'
With ForeignKey fields queries work the other way too, but they're slightly different due to the non-symmetrical nature of the relationship.
>>> p = Publisher.objects.get(name='Apress Publishing'...
jQuery: Count number of list elements?
... num = $("#mylist").find("li").length;
console.log(num);
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<ul id="mylist">
<li>Element 1</li>
<li>Element 2</li>
<li>Element 3</li>
<li>E...
Rails Root directory path?
...ils
def self.root
File.expand_path("..", __dir__)
end
end
source:
https://github.com/rails/rails/blob/5259062868dcf10fbcf735d6520e6a14e15fdcdb/actionmailer/test/abstract_unit.rb#L12
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Listing all permutations of a string/integer
...>
a + perm(...), b + perm(....)
....
I found the pseudocode on http://www.programmersheaven.com/mb/Algorithms/369713/369713/permutation-algorithm-help/:
makePermutations(permutation) {
if (length permutation < required length) {
for (i = min digit to max digit) {
if (i not in per...
What is the difference between `new Object()` and object literal notation?
...l notation prevents us from falling foul of this buffoonery.
(From http://www.jameswiseman.com/blog/2011/01/19/jslint-messages-use-the-object-literal-notation/)
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...
Upload files with HTTPWebrequest (multipart/form-data)
...me post params do the following:
RequestHelper.PostMultipart(
"http://www.myserver.com/upload.php",
new Dictionary<string, object>() {
{ "testparam", "my value" },
{ "file", new FormFile() { Name = "image.jpg", ContentType = "image/jpeg", FilePath = "c:\\temp\\mynicei...
Do browsers parse javascript on every page load?
...ing the preparsed version of the code.
InfoQ has a good writeup @ http://www.infoq.com/articles/google-dart
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What does the caret (^) character mean?
...it introductory docs online also introduce revision and range specifiers:
https://git-scm.com/book/en/v2/Git-Tools-Revision-Selection
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Was PreferenceFragment intentionally excluded from the compatibility package?
...er here:
PreferenceActivity Android 4.0 and earlier
or on my blog:
http://www.blackmoonit.com/2012/07/all_api_prefsactivity/
Tested on two tablets running 4.0.3 and 4.0.4 as well as a phone running 4.0.4 and 2.3.3 and also an emulator running 1.6.
...
Are there any disadvantages to always using nvarchar(MAX)?
...
I checked some articles and find useful test script from this: http://www.sqlservercentral.com/Forums/Topic1480639-1292-1.aspx
Then changed it to compare between NVARCHAR(10) vs NVARCHAR(4000) vs NVARCHAR(MAX) and I don't find speed difference when using specified numbers but when using MAX. Yo...