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How to get subarray from array?
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What K_7 said; most especially, monkey-patching the Builtins (Object, Array, Promise, etc) is very naughty. See the famous example of MooTools forcing a rename of the proposed native Array.prototype.contains to Array.prototype.includes....
How do I deep copy a DateTime object?
...r can next place an order. Calling the function to create a copy produces side effects I don't want.
– Billy ONeal
Apr 5 '10 at 16:19
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What is the difference between IEqualityComparer and IEquatable?
...an object (which is usually a lightweight class different from T) that provides comparison functions that operates on T
– rwong
Feb 22 at 16:40
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When should one use RxJava Observable and when simple Callback on Android?
I'm working on networking for my app. So I decided to try out Square's Retrofit . I see that they support simple Callback
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Finding Number of Cores in Java
...s number of physical cores .
private int getNumberOfCPUCores() {
OSValidator osValidator = new OSValidator();
String command = "";
if(osValidator.isMac()){
command = "sysctl -n machdep.cpu.core_count";
}else if(osValidator.isUnix()){
command = "lscpu";
}else if(o...
Python: Bind an Unbound Method?
...by calling their __get__ method:
bound_handler = handler.__get__(self, MyWidget)
Here's R. Hettinger's excellent guide to descriptors.
As a self-contained example pulled from Keith's comment:
def bind(instance, func, as_name=None):
"""
Bind the function *func* to *instance*, with eith...
What's the difference between an exclusive lock and a shared lock?
...ad threads to wait when write thread is started waiting? Because how to avoid starvation of write thread because of continuous read request?
– Kanagavelu Sugumar
Jun 22 '16 at 12:31
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What is the difference between assert, expect and should in Chai?
...rm the same task. Some users prefer one style over the other. This being said, there are also a couple technical considerations worth highlighting:
The assert and expect interfaces do not modify Object.prototype, whereas should does. So they are a better choice in an environment where you cannot o...
How does SIGINT relate to the other termination signals such as SIGTERM, SIGQUIT and SIGKILL?
...nswered Oct 28 '10 at 15:49
Diomidis SpinellisDiomidis Spinellis
17.2k22 gold badges5151 silver badges7676 bronze badges
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How to change the opacity (alpha, transparency) of an element in a canvas element after it has been
...ck. It must have been a very old Chrome, it works on all platforms now: jsfiddle.net/y0z9h9m7
– Ian
May 19 '17 at 20:11
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