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Java OCR implementation [closed]
...oxJoshua Fox
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What does it mean to start a PHP function with an ampersand?
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It's returning a reference, as mentioned already. In PHP 4, objects were assigned by value, just like any other value. This is highly unintuitive and contrary to how most other languages works.
To get around the problem, references were used for variables that pointed to obje...
proguard hell - can't find referenced class
...ic Lafortune
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How can I recall the argument of the previous bash command?
Is there a way in Bash to recall the argument of the previous command?
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When should I use Memcache instead of Memcached?
...o seems to require external C/C++ libraries so I'm not sure if I can install it.
4 Answers
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Laravel Check If Related Model Exists
...hp 7.2+ you can't use count on the relation object, so there's no one-fits-all method for all relations. Use query method instead as @tremby provided below:
$model->relation()->exists()
generic solution working on all the relation types (pre php 7.2):
if (count($model->relation))
{
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Git undo local branch delete
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ChetanChetan
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php中三个等于号是什么意思？=== - PHP - 清泛IT论坛，有思想、有深度
1、=：赋值，在逻辑运算时也有效；
2、==：等于运算，但是不比较值的类型；
3、===：完全等于运算，不仅比较值，而且还比较值的类型，只有两者一致才为真。
JavaScript chop/slice/trim off last character in string
...viously using the substring version. Thanks!
– Matt Ball
Apr 13 '10 at 14:09
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forgive me if I'm...