public static <T, T1> Map<T, T1> where(Map<T, T1> map, JFuncTT<Map.Entry<T, T1>, Boolean> func) {
try {
Map<T, T1> result = new HashMap<>();
for (Map.Entry<T, T1> el : map.entrySet())
if (func.invoke(el)) result.put(el.getKey(), el.getValue());
return result;
} catch (Exception ignore) {
return new HashMap<>();
}
}
public static <T, T1, T2> Map<T, T2> select(Map<T, T1> map, JFuncTT<T1, T2> func) {
try {
Map<T, T2> result = new HashMap<>();
for (Map.Entry<T, T1> el : map.entrySet())
result.put(el.getKey(), func.invoke(el.getValue()));
return result;
} catch (Exception ignore) {
return new HashMap<>();
}
}
public static <T, T1> T1 first(Map<T, T1> map, JFuncTT<T, Boolean> func) {
try {
for (Map.Entry<T, T1> el : map.entrySet()) if (func.invoke(el.getKey())) return el.getValue();
} catch (Exception ignore) {
}
return null;
}
public static <T, T1, T2> Collection<T2> selectMap(
Map<T, T1> map, JFuncTT<Map.Entry<T, T1>, T2> func) {
try {
List<T2> result = new ArrayList<>();
for (Map.Entry<T, T1> el : map.entrySet()) result.add(func.invoke(el));
return result;
} catch (Exception ignore) {
return new ArrayList<>();
}
}
public static <T, T1> void foreach(Map<T, T1> map, JActionT<Map.Entry<T, T1>> action) {
try {
for (Map.Entry<T, T1> entry : map.entrySet()) action.invoke(entry);
} catch (Exception ignore) {
}
}
public static <T, T1> T1 first(Map<T, T1> map) {
for (Map.Entry<T, T1> el : map.entrySet()) return el.getValue();
return null;
}