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90后创业四年:曾经觉得不公 后来愿赌服输 - 资讯 - 清泛网 - 专注C/C++及内核技术
...流量，我觉得很不公平。
后来我反思总结了一下，这种使用场景，不应该站在技术人员的角度来看，而是应该站在产品经理的角度来看。这类产品对用户来讲只是娱乐的需求，用户其实不太关心准不准确，只是哈哈一笑。我用...
When would I need a SecureString in .NET?
...ring -- the lifetime of the native buffer is
shorter.
The contents of the array is unencrypted except on .NET Framework.
In .NET Framework, the contents of the internal char array is encrypted.
.NET doesn't support encryption in all environments, either
due to missing APIs or key management issue...
How to explain callbacks in plain english? How are they different from calling one function from ano
... as a variable where we store information about function.
function processArray(arr, callback) {
var resultArr = new Array();
for (var i = arr.length-1; i >= 0; i--)
resultArr[i] = callback(arr[i]);
return resultArr;
}
var arr = [1, 2, 3, 4];
var arrReturned = processArray(...
Converting JSONarray to ArrayList
I am downloading a JSON string and converting it to JSONArray. Im putting it into a listview and need to be able to delete from that listview later, and since JSONArray has no .remove method (Thanks Obama), I am trying to convert it to an arraylist.
...
Javascript “Uncaught TypeError: object is not a function” associativity question
...hould use semicolons to properly separate statements:
var postTypes = new Array('hello', 'there'); // <--- Place a semicolon here!!
(function() { alert('hello there') })();
Your code was actually trying to invoke the array object.
...
Should I always use a parallel stream when possible?
...ache misses then you wouldn't gain anything by parallelization. That's why array-based sources parallelize the best as the next indices (near the current index) are cached and there are fewer chances that CPU would experience a cache miss.
He also mentions a relatively simple formula to determine a...
What's the difference between “groups” and “captures” in .NET regular expressions?
...p). Continue on. Within a single match, a group collection precipitates an array of just what's needed. There is no need for find next, there is no re-entrance making it 10 to 20 or more times faster.
– user557597
Feb 28 '17 at 2:47
...
Representing null in JSON
...= '{"myString": ""}';
var json5 = '{"myString": "null"}';
var json6 = '{"myArray": []}';
console.log(JSON.parse(json1)); // {}
console.log(JSON.parse(json2)); // {myCount: null}
console.log(JSON.parse(json3)); // {myCount: 0}
console.log(JSON.parse(json4)); // {myString: ""}
console.log(JSON.parse(...
Difference between map, applymap and apply methods in Pandas
...ed this book):
Another frequent operation is applying a function on 1D arrays to each column or row. DataFrame’s apply method does exactly this:
In [116]: frame = DataFrame(np.random.randn(4, 3), columns=list('bde'), index=['Utah', 'Ohio', 'Texas', 'Oregon'])
In [117]: frame
Out[117]:
...
How to split/partition a dataset into training and test datasets for, e.g., cross validation?
What is a good way to split a NumPy array randomly into training and testing/validation dataset? Something similar to the cvpartition or crossvalind functions in Matlab.
...