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Java String array: is there a size of method?
I come from a php background and in php, there is an array_size() function which tells you how many elements in the array are used.
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MySQL Workbench: How to keep the connection alive
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From the now unavailable internet archive:
Go to Edit -> Preferences -> SQL Editor and set to a higher value this parameter: DBMS connection read time out (in seconds). For instance: 86400.
Close and reopen MyS...
Which equals operator (== vs ===) should be used in JavaScript comparisons?
...ntirely and just don't use the String constructor to create string objects from string literals.
Reference
http://www.ecma-international.org/ecma-262/5.1/#sec-11.9.3
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How to display gpg key details without importing it?
...on STDERR, so you could just read STDIN to split apart the key information from the warning.
Technical Details: Listing OpenPGP Packets
Without installing any further packages, you can use gpg --list-packets [file] to view information on the OpenPGP packets contained in the file.
$ gpg --list-pac...
How to find memory leak in a C++ code/project?
...e associated with a pointer. When a dynamic variable becomes disassociated from its pointer(s), it becomes impossible to erase. Again, this results in a memory leak:
char* str1 = new char [30];
char* str2 = new char [40];
strcpy(str1, "Memory leak");
str2 = str1; // Bad! Now the 40 bytes are imp...
I get exception when using Thread.sleep(x) or wait()
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You have a lot of reading ahead of you. From compiler errors through exception handling, threading and thread interruptions. But this will do what you want:
try {
Thread.sleep(1000); //1000 milliseconds is one second.
} catch(InterruptedExcepti...
check if a std::vector contains a certain object? [duplicate]
...td::set also guarantees all the added elements are unique, which saves you from having to do anything like if not contained then push_back()....
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Printing the last column of a line in a file
...ore lines in file and so the pipe to grep is never closed.
If you omit -f from tail the output is shown immediately:
tail file | grep A1 | awk '{print $NF}'
@EdMorton is right of course. Awk can search for A1 as well, which shortens the command line to
tail file | awk '/A1/ {print $NF}'
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Can you do this HTML layout without using tables?
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@igors, +1, you're right. Mind that this question is from 2009. ;)
– Milan Babuškov
Nov 22 '13 at 20:34
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What's the point of 'meta viewport user-scalable=no' in the Google Maps API
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On many devices (such as the iPhone), it prevents the user from using the browser's zoom. If you have a map and the browser does the zooming, then the user will see a big ol' pixelated image with huge pixelated labels. The idea is that the user should use the zooming provided by Go...