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UITableView + Add content offset at top
...wDidLoad method I added:
[self.tableView setContentInset:UIEdgeInsetsMake(50,0,0,0)];
the values it takes are UIEdgeInsetsMake(top,left,bottom,right).
Alternatively the same with Swift:
self.tableView.contentInset = UIEdgeInsetsMake(50, 0, 0, 0)
Swift 4.2:
self.tableView.contentInset = UIEdg...
Returning first x items from array
I want to return first 5 items from array. How can I do this?
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Why doesn't println! work in Rust unit tests?
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C#位运算符（C#按位与、按位或 等） - 更多技术 - 清泛网 - 专注C/C++及内核技术
...逻辑非运算，结果等于01101110，用十进制表示就是：
~145等于110；对二进制的01010101进行位逻辑非运算，结果等于10101010。用十进制表示就是~85等于176。
2、位逻辑与运算
位逻辑与运算将两个运算对象按位进行与运算。与运算...
How to create a density plot in matplotlib?
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How to use Active Support core extensions
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How to toggle a value in Python
...rom the total is a simple and fast way to toggle values:
>>> A = 5
>>> B = 3
>>> total = A + B
>>> x = A
>>> x = total - x # toggle
>>> x
3
>>> x = total - x # toggle
>>> x
5
>>> x = total - x # toggle
>>...
ValueError: math domain error
...gt;>> log(-1)
Traceback (most recent call last):
File "<pyshell#59>", line 1, in <module>
log(-1)
ValueError: math domain error
Without knowing what your newtonRaphson2 function does, I'm not sure I can guess where the invalid x[2] value is coming from, but hopefully this w...