大约有 32,000 项符合查询结果（耗时：0.0835秒） [XML]
Why dict.get(key) instead of dict[key]?
...a boolean context (i.e. a Falsey value), such as 0 or an empty string, '', then dictionary.get("bogus") or my_default would evaluate to my_default whereas dictionary.get("bogus", my_default) would return the Falsey value. So no, dictionary.get("bogus") or my_default is not equivalent to dictionary.g...
Default constructor vs. inline field initialization
...uctors that initialise variables differently (i.e. with different values), then initialisers are useless because the changes will be overridden, and wasteful.
On the other hand, if you have many constructors that initialise with the same value then you can save lines of code (and make your code sli...
How can I group data with an Angular filter?
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First do a loop using a filter that will return only unique teams, and then a nested loop that returns all players per current team:
http://jsfiddle.net/plantface/L6cQN/
html:
<div ng-app ng-controller="Main">
<div ng-repeat="playerPerTeam in playersToFilter() | filter:filterTeam...
How to set or change the default Java (JDK) version on OS X?
...e version you want to be the default (1.6.0_65-b14-462 for arguments sake) then:
export JAVA_HOME=`/usr/libexec/java_home -v 1.6.0_65-b14-462`
or you can specify just the major version, like:
export JAVA_HOME=`/usr/libexec/java_home -v 1.8`
Now when you run java -version you will see:
java version...
Using Eloquent ORM in Laravel to perform search of database using LIKE
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@gsk I think you join (using the with() method) and then you can search the column as usual. The syntax is probably something like table.field.
– Anthony
Mar 2 '16 at 21:04
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WebView link click open default browser
... Note that if the url is relative, (doesn't start with "http://") then it will open inside the app. To avoid this always return true and make relative url links do nothing.
– Johan S
Jun 4 '13 at 10:48
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What is a regular expression which will match a valid domain name without a subdomain?
...in UTF-8 into ACE encoding. The resulting URL https://nic.xn--flw351e/ can then be used as ACE-encoded equivalent of https://nic.谷歌/.
$ idn --quiet -a nic.谷歌
nic.xn--flw351e
This magic regular expression should cover most domains (although, I am sure there are many valid edge cases th...
How to Use Order By for Multiple Columns in Laravel 4?
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Otherwise, if you always need to order by desc, then you can use latest() too.
– ssi-anik
Mar 10 '16 at 20:51
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How can I implement an Access Control List in my Web MVC application?
... you have class named FooBarModel or something that inherits AbstractModel then you are doing it wrong.
In proper MVC the Model is a layer, which contains a lot of classes. Large part of the classes can be separated in two groups , based on the responsibility:
- Domain Business Logic
(read more:...
How to initialize a vector in C++ [duplicate]
...ame T, size_t N>
T* end(T(&arr)[N]) { return &arr[0]+N; }
And then you can do this without having to repeat the size all over:
int vv[] = { 12,43 };
std::vector<int> v(begin(vv), end(vv));
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