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How does the C# compiler detect COM types?
...lass supplies concrete
implementation(s) of one or more
interfaces. In COM, such concrete
implementations can be written in any
programming language that supports COM
component development, e.g. Delphi,
C++, Visual Basic, etc.
See my answer to a similar question about the Microsoft Spe...
Is HttpClient safe to use concurrently?
...
In late, but I wanted to comment on @cwills. DefaultRequestHeaders are just that, defaults. If you want different headers on a per-request-basis, you can create new StringContent(), set additional headers on that, then use the overload that takes URI...
Opacity of div's background without affecting contained element in IE 8?
... way as the opacity value.
See this page for more info: http://css-tricks.com/rgba-browser-support/
The down-side, is that this doesn't work in IE8 or lower. The page I linked above also lists a few other browsers it doesn't work in, but they're all very old by now; all browsers in current use exc...
Why is using the JavaScript eval function a bad idea?
...ing
(no line numbers, etc.)
eval'd code executes slower (no opportunity to compile/cache eval'd code)
Edit: As @Jeff Walden points out in comments, #3 is less true today than it was in 2008. However, while some caching of compiled scripts may happen this will only be limited to scripts that are ev...
Convert a JSON string to object in Java ME?
...
I used a few of them and my favorite is,
http://code.google.com/p/json-simple/
The library is very small so it's perfect for J2ME.
You can parse JSON into Java object in one line like this,
JSONObject json = (JSONObject)new JSONParser().parse("{\"name\":\"MyNode\", \"width\":200, ...
ruby on rails f.select options with custom attributes
...ils source. https://web.archive.org/web/20130128223827/http://www.pogodan.com/blog/2011/02/24/custom-html-attributes-in-options-for-select
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Escape regex special characters in a Python string
...e.escape(r'\ a.*$'))
\\\ a\.\*\$
>>> re.escape('www.stackoverflow.com')
'www\\.stackoverflow\\.com'
>>> print(re.escape('www.stackoverflow.com'))
www\.stackoverflow\.com
Repeating it here:
re.escape(string)
Return string with all non-alphanumerics backslashed; this is useful if y...
How do I force a favicon refresh?
...ur users get the update.
<link rel="icon" href="http://www.yoursite.com/favicon.ico?v=2" />
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How to check edittext's text is email address or not?
... = "^[\\w\\.-]+@([\\w\\-]+\\.)+[A-Z]{2,4}$";
Pattern pattern = Pattern.compile(expression, Pattern.CASE_INSENSITIVE);
Matcher matcher = pattern.matcher(email);
return matcher.matches();
}
Pass your edit text string in this function .
for right email verification you need server side a...
How do I align views at the bottom of the screen?
...pport.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_height="match_parent"
android:layout_width="match_parent">
<android.sup...