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Iterate through a HashMap [duplicate]
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Extracted from the reference How to Iterate Over a Map in Java:
There are several ways of iterating over a Map in Java. Let's go over the most common methods and review their advantages and disadvantages. Since all maps in Java implem...
iOS: Modal ViewController with transparent background
...one in code, or by setting the properties of the segue in the storyboard.
From the UIViewController documentation:
UIModalPresentationOverCurrentContext
A presentation style where the content is displayed over only the
parent view controller’s content. The views beneath the presented
...
Matplotlib 2 Subplots, 1 Colorbar
...ton's code using the axparameter of figure.colorbar() with a list of axes.
From the documentation:
ax
None | parent axes object(s) from which space for a new colorbar axes will be stolen. If a list of axes is given they will all be resized to make room for the colorbar axes.
imp...
Getting All Variables In Scope
...e been closed over may be referenced by a closure function upon calling it from a caller that is outside of the definition/closure scope (and whose variables are not at all accessible from withing the closure's body).
– DDS
Feb 1 '15 at 19:51
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Are string.Equals() and == operator really same? [duplicate]
Are they really same? Today, I ran into this problem. Here is the dump from the Immediate Window:
8 Answers
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Implements vs extends: When to use? What's the difference?
...ns in your profile. If you understand the concept of multiple-inheritance from C++ (referring to classes that inherit characteristics from more than one other class), Java does not allow this, but it does have keyword interface, which is sort of like a pure virtual class in C++. As mentioned by lo...
How do I list all cron jobs for all users?
...replace
# whitespace characters with a single space, and remove any spaces from the
# beginning of each line.
function clean_cron_lines() {
while read line ; do
echo "${line}" |
egrep --invert-match '^($|\s*#|\s*[[:alnum:]_]+=)' |
sed --regexp-extended "s/\s+/ /g"...
$.focus() not working
...e. The reason that's not working is simply because it's not stealing focus from the dev console. If you run the following code in your console and then quickly click in your browser window after, you will see it focus the search box:
setTimeout(function() { $('input[name="q"]').focus() }, 3000);
...
Is there an opposite to display:none?
...he documentation for these values here ).
display:none removes an element from the page layout entirely, as if it wasn’t there.
All other values for display cause the element to be a part of the page, so in a sense they’re all opposite to display:none.
But there isn’t one value that’s the...
Clone Object without reference javascript [duplicate]
..." + B.a); // 25 30 40
This creates a new object in A and B that inherits from obj. This means that you can add properties without affecting the original.
To support legacy implementations, you can create a (partial) shim that will work for this simple task.
if (!Object.create)
Object.create ...