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SqlException from Entity Framework - New transaction is not allowed because there are other threads
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从源代码剖析Mahout推荐引擎 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...L(Cassandra, HBase, MongoDB)。
注：NoSQL的实现在mahout-integration-0.8.jar中。
数据格式支持2种：
GenericDataModel: 用户ID，物品ID，用户对物品的打分(UserID,ItemID,PreferenceValue)
GenericBooleanPrefDataModel: 用户ID，物品ID (UserID,ItemID)，这种方式表...
Differences and relationship between glActiveTexture and glBindTexture
...:
Object *g_objs[MAX_OBJECTS][MAX_LOCATIONS] = {NULL};
int g_currObject = 0;
void BindObject(int loc, Object *obj)
{
g_objs[g_currObject][loc] = obj;
}
void ActiveObject(int currObject)
{
g_currObject = currObject;
}
Notice that now, we not only have a 2D list of Objects, but we also have t...
Fling gesture detection on grid layout
...ments OnClickListener {
private static final int SWIPE_MIN_DISTANCE = 120;
private static final int SWIPE_MAX_OFF_PATH = 250;
private static final int SWIPE_THRESHOLD_VELOCITY = 200;
private GestureDetector gestureDetector;
View.OnTouchListener gestureListener;
@Override
protected vo...
'transform3d' not working with position: fixed children
...ances, a fixed div would be positioned exactly where it is specified ( top:0px , left:0px ).
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WebDriver: check if an element exists? [duplicate]
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What's the purpose of using braces (i.e. {}) for a single-line if or loop?
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Let's attempt to also modify i when we increment j:
int j = 0;
for (int i = 0 ; i < 100 ; ++i)
if (i % 2 == 0)
j++;
i++;
Oh no! Coming from Python, this looks ok, but in fact it isn't, as it's equivalent to:
int j = 0;
for (int i = 0 ; i < 100 ; ++i)
i...
How to get the command line args passed to a running process on unix/linux systems?
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310
There are several options:
ps -fp <pid>
cat /proc/<pid>/cmdline | sed -e "s/\x00/ /...
How to use Comparator in Java to sort
...son a, Person b) {
return a.age < b.age ? -1 : a.age == b.age ? 0 : 1;
}
}
class Person {
String name;
int age;
Person(String n, int a) {
name = n;
age = a;
}
@Override
public String toString() {
return String.format("{name=%s, age=%...
How to calculate a Mod b in Casio fx-991ES calculator
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