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Python: List vs Dict for look up table
...ite some memory.
If you do not add new entries on the fly (which you do, based on your updated question), it might be worthwhile to sort the list and use binary search. This is O(log n), and is likely to be slower for strings, impossible for objects which do not have a natural ordering.
...
Unioning two tables with different number of columns
...Normally you need to have the same number of columns when you're using set based operators so Kangkan's answer is correct.
SAS SQL has specific operator to handle that scenario:
SAS(R) 9.3 SQL Procedure User's Guide
CORRESPONDING (CORR) Keyword
The CORRESPONDING keyword is used only when a set oper...
How to get an object's properties in JavaScript / jQuery?
...oking JavaScript's native for in loop:
var obj = {
foo: 'bar',
base: 'ball'
};
for(var key in obj) {
alert('key: ' + key + '\n' + 'value: ' + obj[key]);
}
or using jQuery's .each() method:
$.each(obj, function(key, element) {
alert('key: ' + key + '\n' + 'value: ' + element...
Shared-memory objects in multiprocessing
...
# create array in shared memory segment
shared_array_base = multiprocessing.RawArray(ctype, np.prod(dimensions))
# convert to numpy array vie ctypeslib
self.shared_arrays[self.cur] = np.ctypeslib.as_array(shared_array_base)
# do a reshape for correct d...
On showing dialog i get “Can not perform this action after onSaveInstanceState”
...
Our solution is create activity and fragment base class and delegate onResumeFragments to fragment (we create onResumeFragments in fragment base class). It is not nice solution but it does work. If you have any better solution please let me know :)
...
Circular gradient in android
...its are: px (pixels), dp
(density-independent pixels), sp (scaled pixels based on preferred
font size), in (inches), and mm (millimeters).
May be a fractional value, which is a floating point number appended
with either % or %p, such as "14.5%". The % suffix always means a
percentage of...
When a 'blur' event occurs, how can I find out which element focus went *to*?
...olution, but for only Firefox due to explicitOriginalTarget
Autocompleter.Base.prototype.onBlur = Autocompleter.Base.prototype.onBlur.wrap(
function(origfunc, ev) {
if ($(this.options.ignoreBlurEventElement)) {
var newTargetElement = (ev.explicitOriginalTarget.n...
How to determine if a decimal/double is an integer?
...
@Clifford: I usually try to answer based on what is best to solve the OPs problem, not based on what the title says. Titles are rarely an accurate description of the problem.
– Mark Byers
May 1 '10 at 22:25
...
How to dynamically create a class?
...ype. If you want intellisense and no reflection, you have to have a static base class or interface that your dynamic class inherits from and can be casted to. In that case you can modify GetTypeBuilder() method and change moduleBuilder.DefineType call to include the static type as the last parameter...
What are some good resources for learning about Artificial Neural Networks? [closed]
...ation may prove instructive. This is a widely studied problem with a large base of literature outside of neural networks, and there are plenty of lecture notes in numerical optimization available on the web. To start, most people use simple gradient descent, but this can be much slower and less effe...