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How to parse JSON in Scala using standard Scala classes?
...rvice.common.kit.{IsvCode}
import scala.util.Try
/**
*
*/
case class Order(log: String) {
implicit lazy val formats = org.json4s.DefaultFormats
lazy val json: json4s.JValue = parse(log)
lazy val create_time: String = (json \ "create_time").extractOrElse("1970-01-01 00:00:00")
lazy v...
Can a CSS class inherit one or more other classes?
...et an already made, huge web software (in example, an e-commerce or a blog PHP famous software) and they employ PHP code that natively won't add multiple classes to the HTML elements they outuput. This forces you to go around and mess with source code (losing changes if you upgrade later) to make it...
In Python, how do I determine if an object is iterable?
...wn objects iterable, always implement the __iter__ method.
for loops
In order to follow along, you need an understanding of what happens when you employ a for loop in Python. Feel free to skip right to the next section if you already know.
When you use for item in o for some iterable object o, P...
Relative imports in Python 3
...Path(__file__).resolve())
I'm including these two lines only to make the order of operations obvious. We can ignore them completely, since they don't affect the execution.
__init__.py and module.py contain only those two lines (i.e., they are effectively empty).
standalone.py additionally attemp...
Converting JavaScript object with numeric keys into array
...ointing out that people should know that this method doesn't guarantee any order in the array; if the keys are indexes then you need to explicitly order them so the array is built in the correct order.
– leejt489
Oct 9 '15 at 17:37
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Two single-column indexes vs one two-column index in MySQL?
...he first three columns, and so on. If you specify the columns in the right order in the index definition, a single composite index can speed up several kinds of queries on the same table." - Multiple-Column Indexes
– AlikElzin-kilaka
Sep 9 '18 at 4:46
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How to remove globally a package from Composer?
I ran this command to install globally PHPUnit :
2 Answers
2
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Assign a variable inside a Block to a variable outside a Block
...
yes block are the most used functionality , so in order to avoid the retain cycle we should avoid using the strong variable,including self inside the block, inspite use the _weak or weakself.
share
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How do I get a substring of a string in Python?
...
Substr() normally (i.e. PHP and Perl) works this way:
s = Substr(s, beginning, LENGTH)
So the parameters are beginning and LENGTH.
But Python's behaviour is different; it expects beginning and one after END (!). This is difficult to spot by beg...
Sort array of objects by single key with date value
...his ES6 one-liner might be of help. yourArr.sort((a, b) => a.yourNumericOrderingKey > b.yourNumericOrderingKey). In my case I had to sort based on an order key that was coming inside the objects of main array.
– keshavDulal
Sep 20 at 10:53
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