[ENH] add InfiniteSampler

examples/hed/utils.py

@@ -1,6 +1,21 @@
 import torch
 import torch.nn as nn
 import numpy as np
+import torch.utils.data.sampler as sampler
+
+
+class InfiniteSampler(sampler.Sampler):
+    def __init__(self, num_samples):
+        self.num_samples = num_samples
+
+    def __iter__(self):
+        while True:
+            order = np.random.permutation(self.num_samples)
+            for i in range(self.num_samples):
+                yield order[i]
+
+    def __len__(self):
+        return None
 
 
 def gen_mappings(chars, symbs):