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Automatic creation date for Django model form objects?
What's the best way to set a creation date for an object automatically, and also a field that will record when the object was last updated?
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Is quitting an application frowned upon?
Moving on in my attempt to learn Android, I just read the following :
40 Answers
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What's the difference between ngModel.$modelValue and ngModel.$viewValue
...tion, but it might just be that you're a little confused. The $modelValue and $viewValue have one distinct difference. It is this:
As you already noted above:
$viewValue: Actual string (or Object) value in the view.
$modelValue: The value in the model, that the control is bound to.
I'm go...
R object identification
... often ending up with a function producing output for which I don't understand the output data type. I'm expecting a list and it ends up being a list of lists or a data frame or something else. What's a good method or workflow for figuring out the output data type when first using a function?
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How to configure an app to run correctly on a machine with a high DPI setting (e.g. 150%)?
...g of your UI. It does so by having your app render its output to a bitmap and drawing that bitmap to the screen. The rescaling of that bitmap makes the text inevitably look fuzzy. A feature called "DPI virtualization", it keeps old programs usable on high resolution monitors.
You have to explici...
How to read a text file reversely with iterator in C#
I need to process a large file, around 400K lines and 200 M. But sometimes I have to process from bottom up. How can I use iterator (yield return) here? Basically I don't like to load everything in memory. I know it is more efficient to use iterator in .NET.
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How can I match multiple occurrences with a regex in JavaScript similar to PHP's preg_match_all()?
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I would suggest an alternative regex, using sub-groups to capture name and value of the parameters individually and re.exec():
function getUrlParams(url) {
var re = /(?:\?|&(?:amp;)?)([^=&#]+)(?:=?([^&#]*))/g,
match, params = {},
decode = function (s) {return decodeURI...
How to trim a file extension from a String in JavaScript?
...u can use x.slice(0, -4) (where 4 is the three characters of the extension and the dot).
If you don't know the length @John Hartsock regex would be the right approach.
If you'd rather not use regular expressions, you can try this (less performant):
filename.split('.').slice(0, -1).join('.')
Not...
Should I declare Jackson's ObjectMapper as a static field?
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Yes, that is safe and recommended.
The only caveat from the page you referred is that you can't be modifying configuration of the mapper once it is shared; but you are not changing configuration so that is fine. If you did need to change conf...
Microsoft CDN for jQuery or Google CDN? [closed]
...play a role in which cdn you decide to use? I know that Microsoft, Yahoo, and Google all have CDN's now.
18 Answers
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