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Convert character to ASCII code in JavaScript
...s, It certainly does default to zero but I just ran a just out of interest test on performance and it performs **relatively badly compared using 0. jsperf.com/default-to-0-vs-0/4 ** Its a relative difference only, either way its very very quick.
– wade montague
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How can I implement a tree in Python?
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I came across this answer via Google. This library is really nice. I especially love the ability to use the mixin class to make an tree of any object!
– Rÿck Nöthing
Mar 8 '19 at 1:21
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Reimport a module in python while interactive
... Redefinitions of names will override the old definitions, so this is generally not a problem, but if the new version of a module does not define a name that was defined by the old version, the old definition is not removed.
If a module imports objects from another module using from ... import ..., ...
How can I return pivot table output in MySQL?
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The SQL way...
Given his table looks something like this:
CREATE TABLE `test_pivot` (
`pid` bigint(20) NOT NULL AUTO_INCREMENT,
`company_name` varchar(32) DEFAULT NULL,
`action` varchar(16) DEFAULT NULL,
`pagecount` bigint(20) DEFAULT NULL,
PRIMARY KEY (`pid`)
) ENGINE=MyISAM;
Now loo...
uint8_t vs unsigned char
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It documents your intent - you will be storing small numbers, rather than a character.
Also it looks nicer if you're using other typedefs such as uint16_t or int32_t.
share
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Odd behavior when Java converts int to byte?
...+ unsignedByte);
Would print out: "Signed: -1 Unsigned: 255"
What's actually happening here?
We are using bitwise AND to mask all of the extraneous sign bits (the 1's to the left of the least significant 8 bits.)
When an int is converted into a byte, Java chops-off the left-most 24 bits
111111...
git add, commit and push commands in one?
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Yes, but you don't need to commit to test your code, either. You should write some code, test it, and then commit and push. The legendary use of local git commits to provide some sort of multi-file "undo" functionality is used far more in legend than in realit...
Java URL encoding of query string parameters
...Str=uri.toASCIIString(); urlStr.replace("http://","file:///"); I have not tested it, but I think it will work.... :)
– M Abdul Sami
Apr 30 '15 at 20:14
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Meaning of $? (dollar question mark) in shell scripts
... @thirdender The proper solution to that is to encapsulate the complex test in a shell function.
– tripleee
Aug 4 '19 at 9:32
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What's the difference between django OneToOneField and ForeignKey?
...Guide to Django:
OneToOneField
A one-to-one relationship. Conceptually, this is similar to a ForeignKey with unique=True, but the "reverse" side of the relation will directly return a single object.
In contrast to the OneToOneField "reverse" relation, a ForeignKey "reverse" relation retur...