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Can I set an opacity only to the background image of a div?
...e: linear-gradient(rgba(255,255,255,0.5), rgba(255,255,255,0.5)), url("your_image.png");
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Mimicking sets in JavaScript?
...arrayLikeObject) // adds anything that a subclass returns true on _isPseudoArray()
// s.remove(key) // removes a key from the Set
// s.remove(["a", "b"]); // removes all keys in the passed in array
// s.remove("a", "b", ["first", "second"]); // removes all keys...
Instance variables vs. class variables in Python
...test:
import timeit
setup='''
XGLOBAL= 5
class A:
xclass = 5
def __init__(self):
self.xinstance = 5
def f1(self):
xlocal = 5
x = self.xinstance
def f2(self):
xlocal = 5
x = A.xclass
def f3(self):
xlocal = 5
x = XGLOBAL
...
add created_at and updated_at fields to mongoose schemas
Is there a way to add created_at and updated_at fields to a mongoose schema, without having to pass them in everytime new MyModel() is called?
...
Sending files using POST with HttpURLConnection
...nn.connect();
if (conn.getResponseCode() == HttpURLConnection.HTTP_OK) {
return readStream(conn.getInputStream());
}
} catch (Exception e) {
Log.e(TAG, "multipart post error " + e + "(" + urlString + ")");
}
return null;
}
private static Str...
Explanation of strong and weak storage in iOS5
...lse". It's the "someone else" that is important.
Consider the following:
__strong id strongObject = <some_object>;
__weak id weakObject = strongObject;
Now we've got a two pointers to <some_object>, one strong and one weak. If we set strongObject to nil like so:
strongObject = nil;
...
MySQL - length() vs char_length()
What's the main difference between length() and char_length() ?
2 Answers
2
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How do I compare two strings in Perl?
...fied by the current locale if a legacy use locale (but not use locale ':not_characters') is in effect. See perllocale. Do not mix these with Unicode, only with legacy binary encodings. The standard Unicode::Collate and Unicode::Collate::Locale modules offer much more powerful solutions to collation ...
JavaScript: Class.method vs. Class.prototype.method
...n Sonderson's comment: b.constructor like any class property resolves to b.__proto__.constructor and thereby points to Foo.
– Bob Stein
Jul 9 at 17:07
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What is INSTALL_PARSE_FAILED_NO_CERTIFICATES error?
...g=-d -v release install
[signjar] Executing 'C:\Program Files\Java\jdk1.7.0_03\bin\jarsigner.exe' with arguments:
[signjar] '-keystore'
[signjar] 'C:\cygwin\home\Chloe\pairfinder\release.keystore'
[signjar] '-signedjar'
[signjar] 'C:\cygwin\home\Chloe\pairfinder\bin\PairFinder-release-unaligned.apk'...