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What does %w(array) mean?
...h as square brackets %w[...], curly braces %w{...} or even something like exclamation marks %w!...!. All of these have the same behavior (returning an array).
– ryanb
Aug 13 '09 at 21:40
...
Is there a performance difference between i++ and ++i in C?
...
Executive summary: No.
i++ could potentially be slower than ++i, since the old value of i
might need to be saved for later use, but in practice all modern
compilers will optimize this away.
We can demonstrate this by lookin...
Add Bootstrap Glyphicon to Input Box
How can I add a glyphicon to a text type input box? For example I want to have 'icon-user' in a username input, something like this:
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How to programmatically round corners and set random background colors
...UE);
}
Also, you can define the padding within your tags_rounded_corners.xml:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<corners android:radius="4dp" />
<padding
android:top="2dp"
android:left="2dp"
...
get list of pandas dataframe columns based on data type
..."))
>>> df
A B C D E
0 1 2.3456 c d 78
[1 rows x 5 columns]
>>> df.dtypes
A int64
B float64
C object
D object
E int64
dtype: object
>>> g = df.columns.to_series().groupby(df.dtypes).groups
>>> g
{dtype('int64'): ['A', 'E'], ...
What is the purpose of the “Prefer 32-bit” setting in Visual Studio and how does it actually work?
...verall, there
are now five options for the /platform C# compiler switch: x86,
Itanium, x64, anycpu, and anycpu32bitpreferred). When using the "Prefer 32-Bit"
flavor of AnyCPU, the semantics are as follows:
If the process runs on a 32-bit Windows system, it runs as a 32-bit process. IL ...
What's the Linq to SQL equivalent to TOP or LIMIT/OFFSET?
...ble implements IQueryable. You may have to access that through a DataContext or some other provider.
It also assumes that Foo is a column in MyTable that gets mapped to a property name.
See http://blogs.msdn.com/vbteam/archive/2008/01/08/converting-sql-to-linq-part-7-union-top-subqueries-bill-hor...
How to pad zeroes to a string?
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Comments python >= 2.6 are incorrect. That syntax doesn't work on python >= 3. You could change it to python < 3, but may I suggest instead always using parenthesis and omitting the comments altogether (encouraging recommended usage)?
– Jason R....
How to split a string in Haskell?
... edited Jul 23 '16 at 12:45
Alex
7,02755 gold badges4242 silver badges7171 bronze badges
answered Feb 12 '11 at 15:05
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TypeError: ObjectId('') is not JSON serializable
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An example here would be a little more helpful, as this is the best way but the linked documentation isn't the most user friendly for noobs
– Jake
Sep 9 '16 at 15:16
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