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Meaning of = delete after function declaration
... class in a hierarchy is typically
a disaster: given only a pointer to a base, we simply don’t know what
members the derived class has, so we can’t know how to copy
them. So, the best thing to do is usually to delete the default copy
and move operations, that is, to eliminate the default...
How to make JavaScript execute after page load?
...t this stage you could programmatically optimize loading of images and css based on user device or bandwidth speed.
Executes after DOM is loaded (before img and css):
document.addEventListener("DOMContentLoaded", function(){
//....
});
Note: Synchronous JavaScript pauses parsing of the D...
How many random elements before MD5 produces collisions?
...n separate directories. I use this to store user files in separate folders based on their user ID in S3.
For example: "mybucket/users/1234/somefile.jpg". It's not exactly the same as a directory in a file system, but the S3 API has some features that let it work almost the same. I can ask it to li...
How to convert a column number (e.g. 127) into an Excel column (e.g. AA)
...guage: c# --> public static string GetColumnName(int index) // zero-based { const byte BASE = 'Z' - 'A' + 1; string name = String.Empty; do { name = Convert.ToChar('A' + index % BASE) + name; index = index / BASE - 1; } while (index >= 0); return name; }
...
Can I delete a git commit but keep the changes?
... features I was working on, I had to switch my current branch to master to demo some features. But just using a "git checkout master" preserved the changes I also made in my development branch, thus breaking some of the functionality in master. So what I did was commit the changes on my development ...
How to convert an int value to string in Go?
...sting to note that strconv.Itoa is shorthand for
func FormatInt(i int64, base int) string
with base 10
For Example:
strconv.Itoa(123)
is equivalent to
strconv.FormatInt(int64(123), 10)
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Array.Copy vs Buffer.BlockCopy
...
Since the parameters to Buffer.BlockCopy are byte-based rather than index-based, you're more likely to screw up your code than if you use Array.Copy, so I would only use Buffer.BlockCopy in a performance-critical section of my code.
...
How to Compare Flags in C#?
...tType(),
this.GetType()));
}
ulong uFlag = ToUInt64(flag.GetValue());
ulong uThis = ToUInt64(GetValue());
// test predicate
return ((uThis & uFlag) == uFlag);
}
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Which version of Python do I have installed?
... -v command, since it tells architecture of the installed python (32bit or 64bit)
– Abouzar Nouri
Jan 10 '17 at 12:28
1
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How to use performSelector:withObject:afterDelay: with primitive types in Cocoa?
...alue = 500;
dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(delayInSeconds * NSEC_PER_SEC));
dispatch_after(popTime, dispatch_get_main_queue(), ^(void){
[self doSomethingWithPrimitive:primitiveValue];
});
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