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How to tell if a tag failed to load
I'm dynamically adding <script> tags to a page's <head> , and I'd like to be able to tell whether the loading failed in some way -- a 404, a script error in the loaded script, whatever.
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How Should I Declare Foreign Key Relationships Using Code First Entity Framework (4.1) in MVC3?
...ships and other constraints using code first EF 4.1 without much luck. Basically I am building the data model in code and using MVC3 to query that model. Everything works via MVC which is great (kudos to Microsoft!) but now I want it NOT to work because I need to have data model constraints.
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In an array of objects, fastest way to find the index of an object whose attributes match a search
...Hi everyone instead of using two methods map, indexOf you can use just one called findIndex....... Ex: [{id:1},{id:2},{id:3},{id:4}].findIndex(function(obj){return obj.id == 3}) OR [{id:1},{id:2},{id:3},{id:4}].findIndex(obj => obj.id == 3)
– Umair Ahmed
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For loop example in MySQL
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set v_counter=v_counter+1;
end while;
commit;
end #
delimiter ;
call load_foo_test_data();
select * from foo order by id;
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Jquery select all elements that have $jquery.data()
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jQuery UI has this already so some may not need to call the anonymous function. api.jqueryui.com/data-selector
– arleslie
Oct 12 '14 at 1:07
add a comm...
How to debug Google Apps Script (aka where does Logger.log log to?)
...e the Logger.log method to log some data whenever the onEdit function gets called, but this too seems like it only works when run from the Script Editor. When I run it from the Script Editor, I can view the logs by going to View->Logs...
True again, but there is help. Peter Hermann's BetterLog ...
Find out whether Chrome console is open
...s answer. This solution takes advantage of the fact that toString() is not called on logged objects unless the console is open.
var devtools = /./;
devtools.toString = function() {
if (!this.opened) {
alert("Opened");
}
this.opened = true;
}
console.log('%c', devtools);
// devtools.op...
How to calculate the CPU usage of a process by PID in Linux from C?
I want to programmatically [in C] calculate CPU usage % for a given process ID in Linux.
12 Answers
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Rails - How to use a Helper Inside a Controller
...> (Rails 4 & 3) (WARNING: this instantiates a new view instance per call)
@template.<helper> (Rails 2)
include helper in a singleton class and then singleton.helper
include the helper in the controller (WARNING: will make all helper methods into controller actions)
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Select last row in MySQL
...f unordered rows by the your_auto_increment_field (or whatever you have it called) in descending order. Then we limit the resultset to just the first row with LIMIT 1.
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