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Comparing strings with == which are declared final in Java
...0
17: invokevirtual #4; //Method java/io/PrintStream.println:(Z)V
20: return
So it directly inlines the final variable to create String string at compile time, which is loaded by ldc operation in step 0. Then the second string literal is loaded by ldc operation in step 7. It doesn't invo...
Use find command but exclude files in two directories
...e it happy.
– peelman
Nov 12 '13 at 20:08
3
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What does @synchronized() do as a singleton method in objective C?
...Edit: Adding some more information that wasn't in the original answer from 2011.
The @synchronized directive prevents multiple threads from entering any region of code that is protected by a @synchronized directive referring to the same object. The object passed to the @synchronized directive is th...
“unary operator expected” error in Bash if condition
...sh in v2.02 (1998), based on the ksh feature available since the 1980s. In 2012, when cdarke wrote that comment, it was already reasonable to say that it was "in Korn shell for over 20 years." My use of the word "modern" in 2012 was certainly questionable; today, it would be ridiculous. But then, th...
How to inject dependencies into a self-instantiated object in Spring?
... in the case?
– Vadim Kirilchuk
Jan 20 '14 at 19:25
3
This is actually a bad pattern. If this is ...
What jsf component can render a div tag?
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edited Mar 19 '15 at 20:51
answered Mar 19 '15 at 19:42
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Why is git prompting me for a post-pull merge commit message?
...his is also a useful resource for avoiding this behavior: longair.net/blog/2009/04/16/git-fetch-and-merge You should be avoiding git pull; use git merge --ff-only if you are just trying to update and you don't think you have any local changes; use git merge --no-ff if you are actually trying to mer...
What's the best way to send a signal to all members of a process group?
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answered Dec 24 '08 at 20:06
Norman RamseyNorman Ramsey
184k5757 gold badges336336 silver badges517517 bronze badges
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How to check if std::map contains a key without doing insert?
...ference.
– Tim Keating
Apr 2 '13 at 20:42
9
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Replace one character with another in Bash
...\- <<< "$x")"; time z="${x// /-}". With a string length of 1M (=2^20) tr took 0.04s and bash 5.0.11 took 17s. With 2M tr took 0.07s (expected) but bash took 69s (4 times as long for twice the string length).
– Socowi
Dec 21 '19 at 11:22
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