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Valid to use (anchor tag) without href attribute?
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The <a>nchor element is simply an anchor to or from some content. Originally the HTML specification allowed for named anchors (<a name="foo">) and linked anchors (<a href="#foo">).
The named anchor format is less commonly used, as the fragment identifier is n...
What is the difference between memoization and dynamic programming?
...t (which typically recurses down to solve the sub-problems).
A good slide from here (link is now dead, slide is still good though):
If all subproblems must be solved at least once, a bottom-up dynamic-programming algorithm usually outperforms a top-down memoized algorithm by a constant facto...
How do I return early from a rake task?
... at the beginning, if one of the checks fails I would like to return early from the rake task, I don't want to execute any of the remaining code.
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Difference between $(this) and event.target?
...it will point to something else. You can always get the actual DOM element from event.currentTarget.
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Error to run Android Studio
.../usr/lib/jvm/java-8-oracle
You will then have to reboot, you can do this from the terminal with:
sudo reboot
In case you want to remove the JDK
sudo apt-get remove oracle-java8-installer
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How to convert an Stream into a byte[] in C#? [duplicate]
...Length]; //declare arraysize
stream.Read(buf, 0, buf.Length); // read from stream to byte array
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Is there a common Java utility to break a list into batches?
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Check out Lists.partition(java.util.List, int) from Google Guava:
Returns consecutive sublists of a list, each of the same size (the final list may be smaller). For example, partitioning a list containing [a, b, c, d, e] with a partition size of 3 yields [[a, b, c], [...
Define css class in django Forms
...can create a custom filter "addcss" in "my_app/templatetags/myfilters.py"
from django import template
register = template.Library()
@register.filter(name='addcss')
def addcss(value, arg):
css_classes = value.field.widget.attrs.get('class', '').split(' ')
if css_classes and arg not in css_...
Why do we need virtual functions in C++?
...you overload func() so it takes a Cat*? If you have to derive more animals from Animal they would all need their own func().
The solution is to make eat() from the Animal class a virtual function:
class Animal
{
public:
virtual void eat() { std::cout << "I'm eating generic food."...
Using app.configure in express
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Be aware that app.configure is completely removed from version 4.0! github.com/visionmedia/express/issues/936
– Ilan Frumer
May 1 '14 at 6:21
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