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What is the best way to implement a “timer”? [duplicate]
...is question, "best" is defined as most reliable (least number of misfires) and precise. If I specify an interval of 15 seconds, I want the target method invoked every 15 seconds, not every 10 - 20 seconds. On the other hand, I don't need nanosecond accuracy. In this example, it would be acceptable f...
Using Selenium Web Driver to retrieve value of a HTML input
.... There's a big difference between the value attribute of an input element and its value property. Does Selenium do the horrible thing jQuery does and conflate them?
– T.J. Crowder
Jul 7 '16 at 18:12
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What is the function __construct used for?
...ave been noticing __construct a lot with classes. I did a little reading and surfing the web, but I couldn't find an explanation I could understand. I am just beginning with OOP.
...
ASP.NET MVC controller actions that return JSON or partial html
...ful but as brad says you need to find out somehow what they are asking for and return the result accordingly.
– Simon_Weaver
Jan 27 '09 at 5:07
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Are there any cases when it's preferable to use a plain old Thread object instead of one of the newe
I see a lot of people in blog posts and here on SO either avoiding or advising against the usage of the Thread class in recent versions of C# (and I mean of course 4.0+, with the addition of Task & friends). Even before, there were debates about the fact that a plain old thread's functionality c...
What is a callback?
What's a callback and how is it implemented in C#?
11 Answers
11
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Grep not as a regular expression
... variable $someVar . However, Grep thinks that I am trying to run a regex and is complaining:
6 Answers
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Get names of all keys in the collection
...
You could do this with MapReduce:
mr = db.runCommand({
"mapreduce" : "my_collection",
"map" : function() {
for (var key in this) { emit(key, null); }
},
"reduce" : function(key, stuff) { return null; },
"out": "my_collection" + "_keys"
})
Then run distinct ...
Where should Rails 3 custom validators be stored?
... @Doug you need to restart your server. The autoload paths are expanded on initialization so new subfolders will not get picked up until you do that.
– Timo
Oct 8 '12 at 23:36
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Moment.js - how do I get the number of years since a date, not rounded up?
... fromNow method rounds up the years. For instance, if today is 12/27/2012 and the person's birth date is 02/26/1978, moment("02/26/1978", "MM/DD/YYYY").fromNow() returns '35 years ago'. How can I make Moment.js ignore the number of months, and simply return the number of years (i.e. 34) since the...