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iOS Equivalent For Android Shared Preferences
...ned. Don't abuse this and use it as a large database, because it is loaded into memory every time you open your app, whether you need something from it or not (other parts of your app will also use this).
Objective-C:
Reading:
NSUserDefaults *preferences = [NSUserDefaults standardUserDefaults];
...
Select N random elements from a List in C#
...c List<T> GetRandomElements<T>(this IEnumerable<T> list, int elementsCount)
{
return list.OrderBy(arg => Guid.NewGuid()).Take(elementsCount).ToList();
}
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PHP - Modify current object in foreach loop
... to ensure I get an array of valid PK's, then implode with comma and place into an SQL IN() clause to return the result-set. It makes one call instead of several via SQL, optimising a bit of the call->wait cycle. Most importantly my code would read well to someone from any language with a degree ...
How to fade to display: inline-block
...a fadeIn() that loads fades in each element with the class .faded in turn, converted to animate() :
Old:
$(".faded").each(function(i) {
$(this).delay(i * 300).fadeIn();
});
New:
$(".faded").each(function(i) {
$(this).delay(i * 300).css('opacity',0).animate({'opacity': 1}, 500);
});
Ho...
Create dynamic URLs in Flask with url_for()
...You can do a lot o stuff with it, for example:
@app.route('/questions/<int:question_id>'): #int has been used as a filter that only integer will be passed in the url otherwise it will give a 404 error
def find_question(question_id):
return ('you asked for question{0}'.format(question...
Advantages of Antlr (versus say, lex/yacc/bison) [closed]
...as-is. To use ANTLR (or any other LL parser generator), you would need to convert this grammar to something that is not left-recursive. However, Bison has no problem with grammars of this form. You would need to declare '+' and '-' as left-associative operators, but that is not strictly required ...
JavaScript Date Object Comparison
...n the examples, is always dealing with operands of the same type, @RobG is converting the values explicitly to Number (example 1 and 3) or in the example 2, we know that Date.prototype.getTime will always return a Number...
– Christian C. Salvadó
Sep 30 '11 at...
Using ECMAScript 6
...s)
Using Babel in your development pipeline will automatically transpile (convert) your JavaScript to be cross-browser compatible. Or, if you're using TypeScript, you can rest easy; your code is already getting transpiled.
Don't want to setup a transpiler (such as Babel/Typescript), or do yo...
Set Viewbag before Redirect
...ePassword obj)
{
if (ModelState.IsValid)
{
int pid = Session.GetDataFromSession<int>("ssnPersonnelID");
PersonnelMaster PM = db.PersonnelMasters.SingleOrDefault(x => x.PersonnelID == pid);
PM.Password = obj.NewPassword;
PM...
How best to determine if an argument is not sent to the JavaScript function
...efault value. The second method will default all but the first (as JS will convert undefined, null, 0, and "" into the boolean false. And if you were to use Tom's method, only the fourth test will use the default!
Which method you choose really depends on your intended behavior. If values other tha...