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How to open a file for both reading and writing?
Is there a way to open a file for both reading and writing?
4 Answers
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What does the “__block” keyword mean?
...eated in a special way when it is used inside a block. Normally, variables and their contents that are also used in blocks are copied, thus any modification done to these variables don't show outside the block. When they are marked with __block, the modifications done inside the block are also visib...
Java “lambda expressions not supported at this language level”
I was testing out some new features of Java 8 and copied the example into my IDE (Eclipse originally, then IntelliJ) as shown here
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The program can't start because libgcc_s_dw2-1.dll is missing
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[GNU gcc link options]
The latter discussion includes -static-libgcc and -static-libstdc++ linker options.
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Boolean vs boolean in Java
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Yes you can use Boolean/boolean instead.
First one is Object and second one is primitive type.
On first one, you will get more methods which will be useful.
Second one is cheap considering memory expense The second will save you a lot more memory, so go for it
Now choose your way....
Why is Thread.Sleep so harmful
...it mentioned that Thread.Sleep(); should not be used, but I can't understand why this is so. If Thread.Sleep(); can cause trouble, are there any alternative solutions with the same result that would be safe?
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Difference between HEAD and master
What is the difference between the HEAD and master in Git?
3 Answers
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What is a callback function?
...allback function is a function which is:
accessible by another function, and
is invoked after the first function if that first function completes
A nice way of imagining how a callback function works is that it is a function that is "called at the back" of the function it is passed into.
Maybe ...
Difference between pre-increment and post-increment in a loop?
Is there a difference in ++i and i++ in a for loop? Is it simply a syntax thing?
22 Answers
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Quickly create a large file on a Linux system
...her answers is a good solution, but it is slow for this purpose. In Linux (and other POSIX systems), we have fallocate, which uses the desired space without having to actually writing to it, works with most modern disk based file systems, very fast:
For example:
fallocate -l 10G gentoo_root.img
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