大约有 40,000 项符合查询结果（耗时：0.0294秒） [XML]
How to implement onBackPressed() in Fragments?
...sed in the Activity. All the FragmentTransaction are addToBackStack before commit:
@Override
public void onBackPressed() {
int count = getSupportFragmentManager().getBackStackEntryCount();
if (count == 0) {
super.onBackPressed();
//additional code
} else {
getS...
Converting 'ArrayList to 'String[]' in Java
...
BozhoBozho
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How to send emails from my Android application?
...rfc822");
i.putExtra(Intent.EXTRA_EMAIL , new String[]{"recipient@example.com"});
i.putExtra(Intent.EXTRA_SUBJECT, "subject of email");
i.putExtra(Intent.EXTRA_TEXT , "body of email");
try {
startActivity(Intent.createChooser(i, "Send mail..."));
} catch (android.content.ActivityNotFoundExcep...
Rspec doesn't see my model Class. uninitialized constant error
...
Your spec_helper file is missing some important commands. Specifically, it's not including config/environment and initializing rspec-rails.
You can add the following lines to the start of your spec/spec_helper.rb file
ENV["RAILS_ENV"] ||= 'test'
require File.expand_path...
Flushing footer to bottom of the page, twitter bootstrap
...ed in). Any ideas what is the problem? Here is some details: stackoverflow.com/questions/18621090/…
– pupadupa
Sep 5 '13 at 10:43
102
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Convert list to array in Java [duplicate]
...= 0; i < list.size(); i++) array[i] = list.get(i);
Update:
It is recommended now to use list.toArray(new Foo[0]);, not list.toArray(new Foo[list.size()]);.
From JetBrains Intellij Idea inspection:
There are two styles to convert a collection to an array: either using
a pre-sized array...
Alphabet range in Python
...rCaseAlphabets():
print("Upper Case Alphabets")
for i in range(65, 91):
print(chr(i), end=" ")
print()
def lowerCaseAlphabets():
print("Lower Case Alphabets")
for i in range(97, 123):
print(chr(i), end=" ")
upperCaseAlphabets();
lowerCaseAlphabets();
...
Regex Email validation
...It is not right, fail to catch at least two invalid formats: "Abc.@example.com" , "Abc..123@example.com"
– sean717
Aug 22 '12 at 5:22
...
An explicit value for the identity column in table can only be specified when a column list is used
...1, 1)" - your answer is absolutely right. But MySQL and Oracle has another commands for it (and it gets non-obvious, please look at w3schools.com/sql/sql_autoincrement.asp)
– Aleksandr Khomenko
Apr 12 '16 at 8:24
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IPC performance: Named Pipe vs Socket
...faster are they? I would prefer to use sockets because they can do two-way communication and are very flexible but will choose speed over flexibility if it is by considerable amount.
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