大约有 42,000 项符合查询结果（耗时：0.0389秒） [XML]
Android: how to hide ActionBar on certain activities
I've developed a simple demo application with a splash screen a map and some regular screens.
16 Answers
...
Check if value already exists within list of dictionaries?
...sing the above code can give you a KeyError. You can fix this by using get and providing a default value. If you don't provide a default value, None is returned.
if not any(d.get('main_color', default_value) == 'red' for d in a):
# does not exist
...
CSS disable text selection
...
Don't apply these properties to the whole body. Move them to a class and apply that class to the elements you want to disable select:
.disable-select {
-webkit-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
}
...
Extracting numbers from vectors of strings
...
How about
# pattern is by finding a set of numbers in the start and capturing them
as.numeric(gsub("([0-9]+).*$", "\\1", years))
or
# pattern is to just remove _years_old
as.numeric(gsub(" years old", "", years))
or
# split by space, get the element in first index
as.numeric(sapply(...
Convert object to JSON in Android
Is there a simple method to convert any object to JSON in Android?
6 Answers
6
...
How should I copy Strings in Java?
...e safe. The latter, however, is less efficient (it creates an extra object and in some cases copies the character data).
With this in mind, the first version should be preferred.
share
|
improve th...
npm: disable postinstall script for package
...ch options? This is not described in 'npm help install', 'npm help config' and 'npm help scripts'.
– farwayer
May 6 '14 at 23:55
3
...
Creating folders inside a GitHub repository without using Git
...reated GitHub repository without installing the Git setup for (Mac, Linux, and Windows). Is it possible to do so?
4 Answers...
Django's SuspiciousOperation Invalid HTTP_HOST header
... It is just connecting using the IP address not the domain name and the IP address is not in the ALLOWED_HOSTS - or at least that is what was happening with me - I could repro it by point my browser to the IP address.
– markmnl
May 17 '14 at 2:38
...
How do you use an identity file with rsync?
...
You may want to use ssh-agent and ssh-add to load the key into memory. ssh will try identities from ssh-agent automatically if it can find them. Commands would be
eval $(ssh-agent) # Create agent and environment variables
ssh-add ~/.ssh/1234-identity
...