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Is key-value observation (KVO) available in Swift?
...Object subclass. Consider that you wanted to observe the bar property of a Foo class. In Swift 4, specify bar as dynamic property in your NSObject subclass:
class Foo: NSObject {
@objc dynamic var bar = 0
}
You can then register to observe changes to the bar property. In Swift 4 and Swift 3.2...
Difference between Hive internal tables and external tables?
...r node it uses to keep track of state.
For instance, when you CREATE TABLE FOO(foo string) LOCATION 'hdfs://tmp/';, this table schema is stored in the database.
If you have a partitioned table, the partitions are stored in the database(this allows hive to use lists of partitions without going to th...
Declare multiple module.exports in Node.js
...
module.js:
const foo = function(<params>) { ... }
const bar = function(<params>) { ... }
//export modules
module.exports = {
foo,
bar
}
main.js:
// import modules
var { foo, bar } = require('module');
// pass your p...
What's the easy way to auto create non existing dir in ansible
... Should note that you may want to add recurse=yes to the file call to get mkdir -p type behavior
– Mitch
Feb 10 '16 at 19:45
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How to make an AJAX call without jQuery?
How to make an AJAX call using JavaScript, without using jQuery?
23 Answers
23
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Batch: Remove file extension
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In case the file your variable holds doesn't actually exist the FOR approach won't work. One trick you could use, if you know the length of the extension, is taking a substring:
%var:~0,-4%
the -4 means that the last 4 digits (presumably .ext) will be truncated.
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Can my enums have friendly names? [duplicate]
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Enum value names must follow the same naming rules as all identifiers in C#, therefore only first name is correct.
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Test parameterization in xUnit.net similar to NUnit
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xUnit offers a way to run parameterized tests through something called data theories. The concept is equivalent to the one found in NUnit but the functionality you get out of the box is not as complete.
Here's an example:
[Theory]
[InlineData("Foo")]
[InlineData(9)]
[InlineData(true)]
pu...
Regular expression for exact match of a string
...ause many people serious problems. E.g., using your approach \bhttp://www.foo.com\b will match http://www.bar.com/?http://www.foo.com, which is most definitely not an exact match, as requested in the OP. This will cause serious problems for people working with URLs or passwords (which, again, is wh...
Pythonic way to create a long multi-line string
...tor (I know, maybe it's not the most efficient way to do it, but I'm not really concerned about performance in this stage, just code readability). Example:
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