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What is the difference between the dot (.) operator and -> in C++? [duplicate]
...is with parenthesis:
(*pointervariable).foo
But typing the ()'s all the time is hard, so they developed -> as a shortcut to say the same thing. If you are accessing a property of an object or object reference, use . If you are accessing a property of an object through a pointer, use ->
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Android emulator and virtualbox cannot run at same time
...kes it possible to run the Virtualbox and the Android emulator at the same time but the performance of the Android emulator in such a setup is extremely bad. If possible it is better to shutdown the Virtualbox emulator and unload its driver (vboxdrv) by running 'sudo /etc/init.d/vboxdrv stop'. Googl...
How do I apply CSS3 transition to all properties except background-position?
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Units of time MUST have a unit. So 0 doesn't work just like 4 won't work, but 4s will work just as 0s will work.
– ESR
Jan 4 '17 at 16:11
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What is the purpose of base 64 encoding and why it used in HTTP Basic Authentication?
...x would only make x2 more bytes than original stream, and 1s,0s - makes x8 times more bytes. (And Base64 makes x1.3 more data than original byte array). So sometimes it is acceptable to encode binary stream as hex string, doubling byte amount - for example just to store password hash in database.
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Automatic Preferred Max Layout Width is not available on iOS versions prior to 8.0
...MaxLayoutWidth for
multiline labels to the current bounds size at design time. You would
need to manually update preferredMaxLayoutWidth at runtime if your
horizontal layout changed.
iOS 8 added support for automatically computing
preferredMaxLayoutWidth at runtime, which makes creating...
Set every cell in matrix to 0 if that row or column contains a 0
... checkRow and checkCol you will see that each element is accessed multiple times.
– Draemon
Dec 8 '08 at 18:49
Draemon...
Using Excel OleDb to get sheet names IN SHEET ORDER
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However this did answer directly,it do save a lot of time on unnecessary tries.
– Shihe Zhang
Jul 6 '17 at 2:28
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How to break nested loops in JavaScript? [duplicate]
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This is ugly. for(i=0;i<5;i++) is supposed to run 5 times. Updating i outside of the loop statement makes it behave in an unexpected way.
– Florian F
Nov 12 '14 at 8:34
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Git submodule head 'reference is not a tree' error
...6' in submodule path 'sub'
This is the same situation as above. But this time we will focus on fixing it from the super-project instead of dipping into the submodule.
Find the Super-project's Errant Commit
$ git log --oneline -p -- sub
ce5d37c local change in sub
diff --git a/sub b/sub
index 5d5...
How to create a trie in Python
...s will have different performance characteristics, take various amounts of time to implement, understand, and get right. This is typical for software development as a whole, in my opinion.
I would probably first try having a global list of all trie nodes so far created, and representing the child-p...