The final } of the method is unreachable – you only get a compilation error if it’s possible to get to the end of the method without returning a value. This is more useful for cases where the end of the method is unreachable due to an exception, e.g. private String find(int minLength) { for … Read more
Stack overflows I’ll make it easy for you; but this is actually quite complex… Note that I will generalize quite a bit here. As you might know, most languages use the stack for storing call information. See also: https://msdn.microsoft.com/en-us/library/zkwh89ks.aspx for how cdecl works. If you call a method, you push stuff on the stack; if … Read more
This comes back to the one-threaded nature of JavaScript1. What happens is pretty much this: Your variables are assigned. You schedule a function, to set run = false. This is scheduled to be run after the current function is run (or whatever else is currently active). You have your endless loop and stay inside the … Read more
The problem with asking this question is that you’ll get so many subjective answers that simply state “I prefer this…”. Instead of making such pointless statements, I’ll try to answer this question with facts and references, rather than personal opinions. Through experience, we can probably start by excluding the do-while alternatives (and the goto), as … Read more
Both of the examples are not endless. The issue is the limitation of int type in Java (or pretty much any other common language). When the value of x reaches 0x7fffffff, adding any positive value will result in overflow and the x becomes negative, therefore lower than j. The difference between the first and second … Read more
Yes, you can use a while True: loop that never breaks to run Python code continually. However, you will need to put the code you want to run continually inside the loop: #!/usr/bin/python while True: # some python code that I want # to keep on running Also, time.sleep is used to suspend the operation … Read more
The C# compiler will transform both for(;;) { // … } and while (true) { // … } into { :label // … goto label; } The CIL for both is the same. Most people find while(true) to be easier to read and understand. for(;;) is rather cryptic. Source: I messed a little more with … Read more
Short answer You can check which View currently has the focus to distinguish between user and program triggered events. EditText myEditText = (EditText) findViewById(R.id.myEditText); myEditText.addTextChangedListener(new TextWatcher() { @Override public void onTextChanged(CharSequence s, int start, int before, int count) { if (myEditText.hasFocus()) { // is only executed if the EditText was directly changed by the user … Read more
itertools provides three infinite iterators: count(start=0, step=1): 0, 1, 2, 3, 4, … cycle(p): p[0], p[1], …, p[-1], p[0], … repeat(x, times=∞): x, x, x, x, … I don’t know of any others in the standard library. Since you asked for a one-liner: __import__(“itertools”).count()
It’s not faster. If you really care, compile with assembler output for your platform and look to see. It doesn’t matter. This never matters. Write your infinite loops however you like.