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PatternSyntaxException: Illegal Repetition when using regex in Java
...ce the error message: "Illegal repetition".
You should escape them: "\\{\"user_id\" : [0-9]*\\}".
And since you seem to be trying to parse JSON, I suggest you have a look at Jackson.
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impro...
Facebook access token server-side validation for iPhone app
...iphone-safari"
},
application: YOUR_APP_NAMESPACE,
user_id: USER_ID,
issued_at: 1366236791,
expires_at: 1371420791,
scopes: [ ]
}
}
If that token isn't from "your app" then it will return an error response.
...
Pointer to class data member “::*”
...
#include <iostream>
class bowl {
public:
int apples;
int oranges;
};
int count_fruit(bowl * begin, bowl * end, int bowl::*fruit)
{
int count = 0;
for (bowl * iterator = begin; iterator != end; ++ iterator)
count += iterator->*fruit;
return count;
}
int main...
A simple explanation of Naive Bayes Classification
...s say that we have data on 1000 pieces of fruit. They happen to be Banana, Orange or some Other Fruit.
We know 3 characteristics about each fruit:
Whether it is Long
Whether it is Sweet and
If its color is Yellow.
This is our 'training set.' We will use this to predict the type of any new fruit...
Does a UNIQUE constraint automatically create an INDEX on the field(s)?
...unique keys are in fact B-tree type indexes.
A composite index on (email, user_id) is enough, you don't need a separate index on email only - MySQL can use leftmost parts of a composite index. There may be some border cases where the size of an index can slow down your queries, but you should not w...
Encoding Javascript Object to Json string
... { };
new_tweets.k = { };
new_tweets.k.tweet_id = 98745521;
new_tweets.k.user_id = 54875;
new_tweets.k.data = { };
new_tweets.k.data.in_reply_to_screen_name = 'other_user';
new_tweets.k.data.text = 'tweet text';
// Will create the JSON string you're looking for.
var json = JSON.stringify(new_tw...
PHP: How to remove specific element from an array?
...
Use array_diff() for 1 line solution:
$array = array('apple', 'orange', 'strawberry', 'blueberry', 'kiwi', 'strawberry'); //throw in another 'strawberry' to demonstrate that it removes multiple instances of the string
$array_without_strawberries = array_diff($array, array('strawberry'));...
How do I bind to list of checkbox values with AngularJS?
...nction SimpleArrayCtrl($scope) {
// Fruits
$scope.fruits = ['apple', 'orange', 'pear', 'naartjie'];
// Selected fruits
$scope.selection = ['apple', 'pear'];
// Toggle selection for a given fruit by name
$scope.toggleSelection = function toggleSelection(fruitName) {
var idx = $scop...
一体化的Linux系统性能和使用活动监控工具–Sysstat - 更多技术 - 清泛网 -...
...wget命令直接在终端下载。
http://sebastien.godard.pagesperso-orange.fr/download.html
# wget http://pagesperso-orange.fr/sebastien.godard/sysstat-11.0.0.tar.gz
接下来，提取下载的软件包，然后进入该目录中，开始编译过程。
# tar -xvf sysstat-11.0.0.tar.gz...
ActionBar text color
...d removing the alpha if needed (the font tag does not support alpha):
int orange = getResources().getColor(R.color.orange);
String htmlColor = String.format(Locale.US, "#%06X", (0xFFFFFF & Color.argb(0, Color.red(orange), Color.green(orange), Color.blue(orange))));
...