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Case insensitive string as HashMap key
...operations. Not an issue for most applications, but worth keeping in mind. From JavaDoc: "This implementation provides guaranteed log(n) time cost for the containsKey, get, put and remove operations. Algorithms are adaptations of those in Cormen, Leiserson, and Rivest's Introduction to Algorithms."
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Replacements for switch statement in Python?
...bda x: x * 5,
'b': lambda x: x + 7,
'c': lambda x: x - 2
}[value](x)
From here
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How to install python3 version of package via pip on Ubuntu?
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This will work on all Ubuntu versions starting from 12.04
– Billal Begueradj
May 9 '17 at 8:40
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How to change an element's title attribute using jQuery
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Another option, if you prefer, would be to get the DOM element from the jQuery object and use standard DOM accessors on it:
$("#myElement")[0].title = "new title value";
The "jQuery way", as mentioned by others, is to use the attr() method. See the API documentation for attr() here.
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Groovy Shell warning “Could not open/create prefs root node …”
...o a backport for Java8 which is in u202.
What you see is really a warning from the JDK's internal logger. It is not an exception. I believe that the warning can be safely ignored .... unless the user code is indeed wanting the system preferences, but that is very rarely the case.
Bonus info
The ...
Storing SHA1 hash values in MySQL
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Reference taken from this blog:
Below is a list of hashing algorithm along with its require bit size:
MD5 = 128-bit hash value.
SHA1 = 160-bit hash value.
SHA224 = 224-bit hash value.
SHA256 = 256-bit hash value.
SHA384 = 384-bit hash v...
How to get a list of installed android applications and pick one to run
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More info here http://qtcstation.com/2011/02/how-to-launch-another-app-from-your-app/
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How to convert a double to long without casting?
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The preferred approach should be:
Double.valueOf(d).longValue()
From the Double (Java Platform SE 7) documentation:
Double.valueOf(d)
Returns a Double instance representing the specified double value.
If a new Double instance is not required, this method should
generally be used...
Using an integer as a key in an associative array in JavaScript
...:
console.log(test[2300]);
// Output: 'Some string'
When getting the keys from the object, though, they aren't going to be turned back into numbers:
for (var key in test) {
console.log(typeof key);
}
// Output: 'string'
Map
ECMAScript 6 allows the use of the Map object (documentation, a compar...
Why are interface variables static and final by default?
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From the Java interface design FAQ by Philip Shaw:
Interface variables are static because Java interfaces cannot be instantiated in their own right; the value of the variable must be assigned in a static context in which ...