大约有 47,000 项符合查询结果（耗时：0.0751秒） [XML]
How to add Action Bar from support library into PreferenceActivity?
...oid:minHeight="?attr/actionBarSize"
app:navigationContentDescription="@string/abc_action_bar_up_description"
android:background="?attr/colorPrimary"
app:navigationIcon="?attr/homeAsUpIndicator"
app:title="@string/action_settings"
/>
SettingsActivity.java :
public class Settin...
Reactive Extensions bug on Windows Phone
...r is creating a connection to the compiler, and the debugger as well needs all vars to be strictly typed. The debugger is guessing correct, and the compiler is somehow taking ques from it. It doesnt really matter why the debugger fixes the problem, the root cause has been found.
...
Converting string “true” / “false” to boolean value [duplicate]
I have a JavaScript string containing "true" or "false" .
3 Answers
3
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Check if Key Exists in NameValueCollection
...key is not found;
So you can just:
NameValueCollection collection = ...
string value = collection[key];
if (value == null) // key doesn't exist
2) if the specified key is found and its associated value is null.
collection[key] calls base.Get() then base.FindEntry() which internally uses ...
How to randomize two ArrayLists in the same fashion?
... a single array or List of those objects.
public class Data {
private String txtFileName;
private String imgFileName;
// Add/generate c'tor, getter/setter, equals, hashCode and other boilerplate.
}
Usage example:
List<Data> list = new ArrayList<Data>();
list.add(new Data...
What is the cleanest way to ssh and run multiple commands in Bash?
...ay have to deal with quoting issues. For instance, if you quote the "limit string" (ie. EOF in the above), then you can't do variable substitutions. But without quoting the limit string, variables are substituted. For example, if you have defined $NAME above in your shell script, you could do
ssh o...
How to find Unused Amazon EC2 Security groups
...AWS CLI tool, I found an easy way to get what I need:
First, get a list of all security groups
aws ec2 describe-security-groups --query 'SecurityGroups[*].GroupId' --output text | tr '\t' '\n'
Then get all security groups tied to an instance, then piped to sort then uniq:
aws ec2 describe-instance...
JavaScript - Get Portion of URL Path
...edomain.com/account/search?filter=a#top
window.location.port // (empty string)
window.location.protocol // http:
window.location.search // ?filter=a
Update, use the same properties for any URL:
It turns out that this schema is being standardized as an interface called URLUtils, and guess ...
How do I create a dictionary with keys from a list and values defaulting to (say) zero? [duplicate]
...y key in the dictionary (check here for a solution for this case). Numbers/strings are safe.
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How do I write a “tab” in Python?
... code:
f = open(filename, 'w')
f.write("hello\talex")
The \t inside the string is the escape sequence for the horizontal tabulation.
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