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How to compare type of an object in Python?
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def distance_from_zero(n): if isinstance(n,int) or isinstance(n,float): return abs(n) else: return "Nope" print distance_from_zero(True) This returns a "1" instead of "Nope". How to get around this ?
– dig_123
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Logical operators for boolean indexing in Pandas
...ou say
(a['x']==1) and (a['y']==10)
You are implicitly asking Python to convert (a['x']==1) and (a['y']==10) to boolean values.
NumPy arrays (of length greater than 1) and Pandas objects such as Series do not have a boolean value -- in other words, they raise
ValueError: The truth value of an...
What is Unicode, UTF-8, UTF-16?
...o input/output something other than the default encoding, you will have to convert it first.
Recommended/default/dominant encodings: When given a choice of which UTF to use, it is usually best to follow recommended standards for the environment you are working in. For example, UTF-8 is dominant on ...
Subtract 7 days from current date
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use dateByAddingTimeInterval method:
NSDate *now = [NSDate date];
NSDate *sevenDaysAgo = [now dateByAddingTimeInterval:-7*24*60*60];
NSLog(@"7 days ago: %@", sevenDaysAgo);
output:
7 days ago: 2012-04-11 11:35:38 +0000
Hope it helps
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How to use ArrayAdapter
...ivate TextView itemView;
}
public MyClassAdapter(Context context, int textViewResourceId, ArrayList<MyClass> items) {
super(context, textViewResourceId, items);
}
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null)...
C++11 range based loop: get item by value or reference to const
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Thanks for the great answer. I guess it should also be pointed out that const auto &x is equivalent to your third choice.
– smg
Apr 16 '15 at 15:11
8
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Quick way to create a list of values in C#?
... array = new string[] { "foo", "bar" };
Queue
var queque = new Queue<int>(new[] { 1, 2, 3 });
Stack
var queque = new Stack<int>(new[] { 1, 2, 3 });
As you can see for the majority of cases it is merely adding the values in curly braces, or instantiating a new array followed by cu...
Is there type Long in SQLite?
I want to create a table with the column type Long instead of Integer . Is it possible?
7 Answers
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How do I include inline JavaScript in Haml?
.../tr>
{% } %}
</script>
At first I used the :cdata to convert (from html2haml), it doesn't work properly (Delete button can't remove relevant component in callback).
<script id='template-download' type='text/x-tmpl'>
<![CDATA[
{% for (var i=0, fil...
bool operator ++ and --
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It comes from the history of using integer values as booleans.
If x is an int, but I am using it as a boolean as per if(x)... then incrementing will mean that whatever its truth value before the operation, it will have a truth-value of true after it (barring o...