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Getting the object's property name
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More specifically, Object.keys(obj) returns an array of property names, i.e. keys, belonging to the passed in obj.
– a learner has no name
Mar 26 '16 at 12:43
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Why do browsers match CSS selectors from right to left?
...nd selector, or sequence of simple selectors and attempts to match it atomically. Then, if there's a match, it follows the combinator leftwards to the next compound selector and checks the element in that position, and so on. There is no evidence that a browser reads each part of a compound selector...
android.view.InflateException: Binary XML file: Error inflating class fragment
...r-level layout XML references a fragment, the fragment's onCreateView() is called. When an exception occurs in a fragment's onCreateView() (for example while inflating the fragment's layout XML), it causes the inflation of the higher-level layout XML to fail. This higher-level inflation failure is w...
Expanding a parent to the height of its children
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@jmendeth An overflow-value called "overlay" does not exist. What is working if the child divs are floated is declaring overflow:hidden.
– Christoph
Jul 11 '12 at 10:17
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Testing if a checkbox is checked with jQuery
...rs (omits the variable assignment). Just to clarify:
// this structure is called a ternary operator
var cbAns = ( $("#ans").is(':checked') ) ? 1 : 0;
It works like this:
var myVar = ( if test goes here ) ? 'ans if yes' : 'ans if no' ;
Example:
var myMath = ( 1 > 2 ) ? 'yes' : 'no' ;
alert...
Creating a simple XML file using python
...ation=True if you specify an encoding... but, to get equivalent behaviour, call tree.write() like this: tree.write("filename.xml", xml_declaration=True, encoding='utf-8') You can use any encoding as long as you explicitly specify one. (ascii will force all Unicode characters outside the 7-bit ASCII ...
What's the difference between lapply and do.call?
I'm learning R recently and confused by two function: lapply and do.call . It seems that they're just similar to map function in Lisp. But why are there two functions with such a different name? Why doesn't R just use a function called map ?
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Is it possible to deserialize XML into List?
...serList above? I tried your method and it says it already defines a member called XYZ with the same parameter types
– Kala J
Apr 24 '14 at 20:45
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The tilde operator in Python
... a nonsensical result, so Python does not allow it. That's why you need to call .isnull() or np.isnan() on your data array first, and then invert the resulting boolean values.
– geofflee
Nov 7 '17 at 5:35
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PHP multidimensional array search by value
... return $key;
}
}
return null;
}
This will work. You should call it like this:
$id = searchForId('100', $userdb);
It is important to know that if you are using === operator compared types have to be exactly same, in this example you have to search string or just use == instead ===....