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How do I check if a string is valid JSON in Python?
... Despite the fact that the spec says that a JSON text must be an array or object, most encoders and decoders (including Python's) will work with any JSON value at the "top," including numbers and strings. 10 is a valid JSON number value.
– John Flatness
...
Why can't decimal numbers be represented exactly in binary?
...me point, whether it's system memory or the theoretical maximum size of an array. This is an entirely separate point to the main one of this answer, however. Even if you had a genuinely arbitrarily large number of bits to play with, you still couldn't represent decimal 0.1 exactly in a floating bina...
Rails update_attributes without save?
...n when assign_attributes tries to stringify the hash keys of the enclosing array:
@user.assign_attributes([ { model: "Sierra" }, { year: "2012" }, { looks: "Sexy" } ])
assign_attributes will raise a NoMethodError exception for stringify_keys, indicating that the first argument is not a Hash. The...
How do I use $scope.$watch and $scope.$apply in AngularJS?
... function to watch two properties together, you can watch the length of an array, etc.
When things happen "inside AngularJS" – e.g., you type into a textbox that has AngularJS two-way databinding enabled (i.e., uses ng-model), an $http callback fires, etc. – $apply has already been called, so w...
What is the best way to solve an Objective-C namespace collision?
...sn't move things out of order. Things like binary search get upset if the array they're searching isn't in sorted order as expected.
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Why Func instead of Predicate?
...hile Predicate has been introduced at the same time that List<T> and Array<T>, in .net 2.0, the different Func and Action variants come from .net 3.5.
So those Func predicates are used mainly for consistency in the LINQ operators. As of .net 3.5, about using Func<T> and Action<...
What is the ultimate postal code and zip regex?
...
use these regx
$ZIPREG=array(
"US"=>"^\d{5}([\-]?\d{4})?$",
"UK"=>"^(GIR|[A-Z]\d[A-Z\d]??|[A-Z]{2}\d[A-Z\d]??)[ ]??(\d[A-Z]{2})$",
"DE"=>"\b((?:0[1-46-9]\d{3})|(?:[1-357-9]\d{4})|(?:[4][0-24-9]\d{3})|(?:[6][013-9]\d{3}))\b",
...
Understanding implicit in Scala
...Text(text: Text): Unit = {
println(text.content)
}
def main(args: Array[String]): Unit = {
printText("World!")
}
// Best to hide this line somewhere below a pile of completely unrelated code.
// Better yet, import its package from another distant place.
implicit val prefixLOL =...
How to filter specific apps for ACTION_SEND intent (and set a different text for each app)
...tActivities(sendIntent, 0);
List<LabeledIntent> intentList = new ArrayList<LabeledIntent>();
for (int i = 0; i < resInfo.size(); i++) {
// Extract the label, append it, and repackage it in a LabeledIntent
ResolveInfo ri = resInfo.get(i);
String ...
Can we define implicit conversions of enums in c#?
...doEnum.INPT] = "use";
arr[PseudoEnum.CTXT] = "as";
arr[PseudoEnum.CTXT] = "array";
arr[PseudoEnum.OUTP] = "index";
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