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iOS application: how to clear notifications?
...an I remove a notification for my application in the Notification Center next time the application opens?
12 Answers
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PostgreSQL error 'Could not connect to server: No such file or directory'
...he first time I used it, but had this issue after a restart. So, can you explain why this worked?
– Dan Williams
Mar 16 '15 at 22:08
...
how to provide a swap function for my class?
...wap(Bar& lhs, Bar& rhs) {
lhs.swap(rhs);
}
...
You mean an explicit specialization. Partial is still something else and also not possible for functions, only structs / classes. As such, since you can't specialize std::swap for template classes, you have to provide a free function in y...
Apache shows PHP code instead of executing it
... /etc/apache2/) to see if you find a file named php. I don't remember the extension but I think it's .so.
Also check in /var/log/apache2/error.log to see if you have any other errors.
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impro...
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
...
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 an optional value in Swift?
... String:
var name: String = "Bertie" // No "?" after String
From the syntax it looks like an optional String is very similar to an ordinary String. It's not. An optional String is not a String with some "optional" setting turned on. It's not a special variety of String. A String and an optional Str...
vs vs for inline and block code snippets
... using the foo() function...") and some block snippets. These tend to be XML, and have very long lines which I prefer the browser to wrap (i.e., I don't want to use <pre> ). I'd also like to put CSS formatting on the block snippets.
...