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How to cancel an $http request in AngularJS?
...defer();
$http.get('/someUrl', {timeout: canceler.promise}).success(successCallback);
// later...
canceler.resolve(); // Aborts the $http request if it isn't finished.
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Python circular importing?
...nction. An import is just a command like any other (assignment, a function call, def, class). Assuming your imports occur at the top of the script, then here's what's happening:
When you try to import World from world, the world script gets executed.
The world script imports Field, which causes th...
Bootstrap combining rows (rowspan)
...n 2</div>
</div>
</div>
<div class="container-fluid">
<div class="row-fluid">
<div class="col-lg-6 col-md-6 col-sm-6 col-xs-6">
<div class="short-div" style="background-color:#999">Span 6</div>
<div class="short-div">Sp...
Naming Classes - How to avoid calling everything a “Manager”? [closed]
...e based on metaphors. A class in your code can't be literally a nanny; you call it a nanny because it looks after some other things very much like a real-life nanny looks after babies or kids. That's OK in informal speech, but not OK (in my opinion) for naming classes in code that will have to be ma...
static linking only some libraries
How can I statically link only a some specific libraries to my binary when linking with GCC?
8 Answers
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How to export table as CSV with headings on Postgresql?
...an also write a query for getting only selected column data.
COPY (select id,name from tablename) TO 'filepath/aa.csv' DELIMITER ',' CSV HEADER;
with admin privilege
\COPY (select id,name from tablename) TO 'filepath/aa.csv' DELIMITER ',' CSV HEADER;
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How to check if my string is equal to null?
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If myString is null, then calling myString.equals(null) or myString.equals("") will fail with a NullPointerException. You cannot call any instance methods on a null variable.
Check for null first like this:
if (myString != null && !myString....
How to return dictionary keys as a list in Python?
... to doing list(iterable) and its behaviour was initially documented in the Calls section of the Python Reference manual. With PEP 448 the restriction on where *iterable could appear was loosened allowing it to also be placed in list, set and tuple literals, the reference manual on Expression lists w...
Change color of PNG image via CSS?
...NG file with filters.
body {
background-color:#03030a;
min-width: 800px;
min-height: 400px
}
img {
width:20%;
float:left;
margin:0;
}
/*Filter styles*/
.saturate { filter: saturate(3); }
.grayscale { filter: grayscale(100%); }
.contrast { filter: contrast(...
What does it mean if a Python object is “subscriptable” or not?
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It basically means that the object implements the __getitem__() method. In other words, it describes objects that are "containers", meaning they contain other objects. This includes strings, lists, tuples, and dictionaries.
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