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How does the bitwise complement operator (~ tilde) work?
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How does the machine know it is getting a two complement negative number instead of a higher positive number? Is it because of the type system of the respective language indicating that the type is a signed int versus unsigned?
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What are enums and why are they useful?
...s (contract status: "permanent", "temp", "apprentice"), or flags ("execute now", "defer execution").
If you use enums instead of integers (or String codes), you increase compile-time checking and avoid errors from passing in invalid constants, and you document which values are legal to use.
BTW, o...
Get current time as formatted string in Go?
...
Use the time.Now() function and the time.Format() method.
t := time.Now()
fmt.Println(t.Format("20060102150405"))
prints out 20110504111515, or at least it did a few minutes ago. (I'm on Eastern Daylight Time.) There are several pre-de...
How to Generate unique file names in C#
... exists), I fall back to GUIDs.
Update:
Recently, I've also use DateTime.Now.Ticks instead of GUIDs:
var myUniqueFileName = string.Format(@"{0}.txt", DateTime.Now.Ticks);
or
var myUniqueFileName = $@"{DateTime.Now.Ticks}.txt";
The benefit to me is that this generates a shorter and "nicer loo...
SQL query return data from multiple tables
I would like to know the following:
6 Answers
6
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Java: notify() vs. notifyAll() all over again
...his is the accepted answer, it's not a question of personal pride. If you know you were wrong now, please edit your answer to say it, and point to e.g. xagyg pedagogic and correct answer below.
– Yann TM
May 5 '17 at 21:15
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Can Android Studio be used to run standard Java projects?
...and click Next.
Fill in the package name, etc and click Finish. You should now see a Java module inside your Android project.
Add your code to the Java module you've just created.
Click on the drop down to the left of the run button. Click Edit Configurations...
In the new window, click on the plus ...
How to turn on front flash light programmatically in Android?
...rc code. here http://code.google.com/p/quick-settings/ (Note: This link is now broken)
For Flashlight directly look http://code.google.com/p/quick-settings/source/browse/trunk/quick-settings/#quick-settings/src/com/bwx/bequick/flashlight (Note: This link is now broken)
Update6
You could also try ...
What are metaclasses in Python?
...try.register(self, self.interfaces)
print "Would register class %s now." % self
def __add__(self, other):
class AutoClass(self, other):
pass
return AutoClass
# Alternatively, to autogenerate the classname as well as the class:
# return type(se...
How to debug template binding errors for KnockoutJS?
...to:
<pre data-bind="text: ko.toJSON($data, null, 2)"></pre>
Now the arguments are passed on to JSON.stringify.
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