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Generate random password string with requirements in javascript
...to && window.crypto.getRandomValues)
{
var result = new Uint8Array(1);
window.crypto.getRandomValues(result);
return result[0];
}
else if(window.msCrypto && window.msCrypto.getRandomValues)
{
var result = new Uint8Array(1);
window.msCry...
How to save an HTML5 Canvas as an image on a server?
...h binary.charCodeAt(i)
i++
# Return our Blob object
new Blob([ new Uint8Array(array) ], type: 'image/png')
And canvas code here:
canvas = document.getElementById('canvas')
file = dataURLtoBlob(canvas.toDataURL())
After that you can use ajax with Form:
fd = new FormData
# Append our...
What is the most effective way for float and double comparison?
...to a primitive type with that
// size. e.g.
//
// TypeWithSize<4>::UInt
//
// is typedef-ed to be unsigned int (unsigned integer made up of 4
// bytes).
//
// Such functionality should belong to STL, but I cannot find it
// there.
//
// Google Test uses this class in the implementation of fl...
How do I iterate over an NSArray?
...s and other collections:
[array enumerateObjectsUsingBlock:^(id object, NSUInteger idx, BOOL *stop) {
// do something with object
}];
You can also use -enumerateObjectsWithOptions:usingBlock: and pass NSEnumerationConcurrent and/or NSEnumerationReverse as the options argument.
10.4 or earl...
How do I use valgrind to find memory leaks?
...>
int main() {
char* alphabet = calloc(26, sizeof(char));
for(uint8_t i = 0; i < 26; i++) {
*(alphabet + i) = 'A' + i;
}
*(alphabet + 26) = '\0'; //null-terminate the string?
free(alphabet);
return 0;
}
Notice that Valgrind points us to the commented line o...
c++ Timer使用总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...ER_ID); //取消定时器
//.h文件函数申明
afx_msg void OnTimer(UINT_PTR nIDEvent);
//.cpp函数定义
void CxxDlg::OnTimer(UINT_PTR nIDEvent)
{
switch (nIDEvent)
{
case TIMER_ID:
{
//do something
}
break;
default:
break;
}
}
//定义...
How to make good reproducible pandas examples
...e.g.,
pd.DataFrame({
'foo_1':pd.Series([1, 0, 0, 0, 0, 1, 0, 1],dtype='uint8',index=pd.RangeIndex(start=0, stop=8, step=1)),
'foo_2':pd.Series([0, 1, 0, 0, 1, 0, 0, 0],dtype='uint8',index=pd.RangeIndex(start=0, stop=8, step=1)),
'foo_3':pd.Series([0, 0, 1, 0, 0, 0, 1, 0],dtype='uint8',index=...
What does “yield break;” do in C#?
... method after returning all the items. Here is an example:
IEnumerable<uint> FindPrimes(uint startAt, uint maxCount)
{
for (var i = 0UL; i < maxCount; i++)
{
startAt = NextPrime(startAt);
yield return startAt;
}
Debug.WriteLine("All the primes were found.")...
Why can templates only be implemented in the header file?
...ecific set of types, for instance numeric types: int8_t, int16_t, int32_t, uint8_t, uint16_t, etc. In this case, it still makes sense to use a template, but explicitly instantiating them for the whole set of types is also possible and, in my opinion, recommended.
– UncleZeiv
...
How do I represent a time only value in .NET?
...ivate set; }
public int Seconds { get; private set; }
public Time(uint h, uint m, uint s)
{
if(h > 23 || m > 59 || s > 59)
{
throw new ArgumentException("Invalid time specified");
}
Hours = (int)h; Minutes = (int)m; Seconds = (int)s;
...