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Reference assignment operator in PHP, =&
What does the =& (equals-ampersand) assignment operator do in PHP?
4 Answers
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Why would one declare a Java interface method as abstract?
...va Language Specification, the abstract keyword for interfaces is obsolete and should no longer be used. (Section 9.1.1.1)
That said, with Java's propensity for backwards compatibility, I really doubt it will ever make a difference whether the abstract keyword is present.
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What's the difference between the various methods to get a Context?
In various bits of Android code I've seen:
8 Answers
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How do I import an SQL file using the command line in MySQL?
...om phpMyAdmin . I want to import it into a different server using the command line.
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Cross-thread operation not valid: Control 'textBox1' accessed from a thread other than the thread it
...o send temperature value from a microcontroller using UART to C# interface and Display temperature on Label.Content . Here is my microcontroller code:
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Check element CSS display with JavaScript
...s currentStyle? never heard of it, also checked document.body.currentStyle and got nothing (wasn't surprised)
– vsync
Oct 29 '16 at 16:36
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Bash script processing limited number of commands in parallel
...ple, 4 processes process1 ... process4 would be started in the background, and the shell would wait until those are completed before starting the next set.
From the GNU manual:
wait [jobspec or pid ...]
Wait until the child process specified by each process ID pid or job specification jobsp...
How much faster is C++ than C#?
...++ code. However C++ code used to be significantly faster for a long time, and also today still is in many cases. This is mainly due to the more advanced JIT optimizations being complicated to implement, and the really cool ones are only arriving just now.
So C++ is faster, in many cases. But this ...
Use JNI instead of JNA to call native code?
...m java to c. In this case jni will win in performance because you can keep and modify this buffer in c, without copying.
These are the problems I've encountered. Maybe there's more. But in general performance is not that different between jna and jni, so wherever you can use JNA, use it.
EDIT
Th...
Is asynchronous jdbc call possible?
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I don't understand how any of the proposed approaches that wrap JDBC calls in Actors, executors or anything else can help here - can someone clarify.
Surely the basic problem is that the JDBC operations block on socket IO. When it does thi...