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What is the difference between Strategy pattern and Dependency Injection?
...ld use the strategy pattern to swap out an XML formatter or CSV formatter, etc.
Dependency Injection is different in that the user is not trying to change the runtime behaviour. Following the example above, we might be creating an XML export program that uses an XML formatter. Rather than structuri...
Best Practice - NSError domains and codes for your own project/app
... could change and add more codes, or change the meaning of existing codes, etc. It also helps me more specifically identify where the error came from. For example, if my StackKit framework generates an error in the com.stackkit domain, I know that it's a framework problem. However, if it generate...
App Inventor 2 CustomWebView 拓展：高级版Web浏览器，完美浏览现代Web前...
...sed when something is long clicked in webview with item(image,string,empty,etc) and type(item type like 0,1,8,etc)
OnCloseWindowRequest(id)
Event triggered when a window needs to be closed
OnConsoleMessage(message,lineNumber,sourceID,level)
Event raised after getting console message.
OnDow...
Labels for radio buttons in rails form
...y submitted data is stored in memory should there be any validation errors etc.
If you can't call the form helper method on the form object, for example if you're using a tag helper (radio_button_tag etc.) you can interpolate the name using:
= radio_button_tag "#{f.object_name}[email]", @message.e...
Input type=password, don't let browser remember the password
...always type their credit card information, CVC code, passwords, usernames, etc whenever that site is going to access anything that should be kept secure [universally or by legal compliance requirements]. For example: purchase forms, bank/credit sites, tax sites, medical data, federal, nuclear, etc -...
Is there an opposite to display:none?
...n CSS, so there are several different values (block, inline, inline-block etc — see the documentation for these values here ).
display:none removes an element from the page layout entirely, as if it wasn’t there.
All other values for display cause the element to be a part of the page, so in a...
How can I get the sha1 hash of a string in node.js?
... default. So sha1sum({}) === sha1sum({"foo":"bar"}) === sha1sum({"a":1}), etc.
– maerics
Jun 4 '15 at 21:40
...
Fitting empirical distribution to theoretical ones with Scipy (Python)?
...ome continuous distribution. The values in the list are not necessarily in order, but order doesn't matter for this problem.
...
Calculate number of hours between 2 dates in PHP
...at it considers different timezones, leap years, leap seconds, summertime, etc. And on top of that it's very easy to use. Here's what you want with the help of this objects:
// Create two new DateTime-objects...
$date1 = new DateTime('2006-04-12T12:30:00');
$date2 = new DateTime('2006-04-14T11:30:0...
Difference Between Select and SelectMany
...
I understand SelectMany to work like a join shortcut.
So you can:
var orders = customers
.Where(c => c.CustomerName == "Acme")
.SelectMany(c => c.Orders);
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