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How do I get an empty array of any size in python?
...ars in each element of the array. If it a mutable obj, and you modify one item, all will be changed. ...But, for this example using integers (or any other immutable type), it makes no difference. Or, if you just assign to elements, it is not a problem either. (I mention it because I've done exac...
How to sort a list of lists by a specific index of the inner list?
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This is a job for itemgetter
>>> from operator import itemgetter
>>> L=[[0, 1, 'f'], [4, 2, 't'], [9, 4, 'afsd']]
>>> sorted(L, key=itemgetter(2))
[[9, 4, 'afsd'], [0, 1, 'f'], [4, 2, 't']]
It is also possible to ...
What's the difference between deque and list STL containers?
...ery edit operation invalidates all your iterators - so to "delete matching items" you need to accumulate the matching items in one operation, and then delete them in another. In a list, you can walk through it, remove and add as you wish, and never have to recalculate an iterator.
...
解决rc中无法设置CComboBox下拉列表框高度的问题 - C/C++ - 清泛网 - 专注C...
...，不是下拉框的！（在rc资源中无法调整高度）m_combo.SetItemHeight(-1,50);IfnIndexis–1,theheig...怎么修改CComboBox实例的高度，注意，不是下拉框的！（在rc资源中无法调整高度）
m_combo.SetItemHeight(-1, 50);
If nIndex is –1, the height ...
Finding the index of elements based on a condition using python list comprehension
...> 2]. Usually dealing with indexes means you're not doing something the best way.
If you do need an API similar to Matlab's, you would use numpy, a package for multidimensional arrays and numerical math in Python which is heavily inspired by Matlab. You would be using a numpy array instead of a l...
What are the lesser known but useful data structures?
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Bloom filter: Bit array of m bits, initially all set to 0.
To add an item you run it through k hash functions that will give you k indices in the array which you then set to 1.
To check if an item is in the set, compute the k indices and check if they are all set to 1.
Of course, this give...
What is lazy loading in Hibernate?
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Oh, Stack Overflow - best answer to be found at the bottom of the page ;-)
– Piotrek Hryciuk
Jan 27 '19 at 20:46
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Set title background color
...;
<style name="customTheme" parent="android:Theme">
<item name="android:windowTitleBackgroundStyle">@style/WindowTitleBackground</item>
</style>
</resources>
res/values/styles.xml - This is where we set the theme to use the color we want for the t...
How to check if element is visible after scrolling?
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Update: use IntersectionObserver
The best method I have found so far is the jQuery appear plugin. Works like a charm.
Mimics a custom "appear" event, which fires when an element scrolls into view or otherwise becomes visible to the user.
$('#foo').appear(fu...
Dialog to pick image from gallery or from camera
...ty);
builder.setTitle("Select Option");
builder.setItems(options, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int item) {
if (options[item].equals("Take Photo")) {
...