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When is del useful in python?
I can't really think of any reason why python needs the del keyword (and most languages seem to not have a similar keyword). For instance, rather than deleting a variable, one could just assign None to it. And when deleting from a dictionary, a del method could be added.
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What would a “frozen dict” be?
...self._d[key]
def __hash__(self):
# It would have been simpler and maybe more obvious to
# use hash(tuple(sorted(self._d.iteritems()))) from this discussion
# so far, but this solution is O(n). I don't know what kind of
# n we are going to run into, but sometime...
Unable to install Maven on Windows: “JAVA_HOME is set to an invalid directory”
...at the directory "E:\java resources\apache-maven-2.2.0\bin" is on your command search path.
Make sure that the JAVA_HOME variable refers to the home directory for your Java installation. If you are executing Java from "E:\Sun\SDK\jdk\bin", then the JAVA_HOME variable needs to point to "E:\Sun\SDK\...
How to remove indentation from an unordered list item?
...
Set the list style and left padding to nothing.
ul {
list-style: none;
padding-left: 0;
}
ul {
list-style: none;
padding-left: 0;
}
<ul>
<li>a</li>
<li>b</li>
<li>c</li&g...
SonarQube Exclude a directory
...ed Jul 26 '15 at 15:59
Juan HernandezJuan Hernandez
1,25111 gold badge77 silver badges22 bronze badges
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Easy way to see saved NSUserDefaults?
...e:
<Bundle Identifier>.foo.pList
Open this up in the pList editor and browse persisted values to your heart's content.
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What's the fastest way to convert String to Number in JavaScript?
...fastest for Number() in Chrome 37.0.2062.124 on Windows Server 2008 R2 / 7 and ParseInt() in Firefox 30.0 with implicit being the slowest for both. Also, you might consider including string literal floats in the test for general comparison. My guess is that it may change the order in some cases be...
builder for HashMap
...tations of those factory methods are that they:
can't hold nulls as keys and/or values (if you need to store nulls take a look at other answers)
produce immutable maps
If we need mutable map (like HashMap) we can use its copy-constructor and let it copy content of map created via Map.of(..)
M...
How do I call a JavaScript function on page load?
...ked, will run your desired function, with whatever parameters you give it. And, of course, you can run more than one function from inside the anonymous function.
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How to lock orientation during runtime
...ing runtime? For example I'd like to allow the user to lock the screen to landscape if the user currently in landscape and toggle the menu option.
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