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Converting bool to text in C++
...s which you might not care about, and create a dynamic string (with memory allocation) whereas the macro can yield a literal string, which avoids that. But on the flip side, the stringstream method can be used for a great many conversions between printable and internal representations. You can run ...
Can I write into the console in a unit test? If yes, why doesn't the console window open?
...y open a console window, using P/Invoke as sinni800 says. From reading the AllocConsole documentation, it appears that the function will reset stdin and stdout handles to point to the new console window. (I'm not 100% sure about that; it seems kind of wrong to me if I've already redirected stdout fo...
How should equals and hashcode be implemented when using JPA and Hibernate
...y resulting in errors and / or data corruption) because your entity may be allocated to a bucket not matching its current hashCode().
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How do I use Java to read from a file that is actively being written to?
...fc = in.getChannel();
java.nio.ByteBuffer bb = java.nio.ByteBuffer.allocate(10);
while(fc.read(bb) >= 0) {
bb.flip();
while(bb.hasRemaining()) {
System.out.println((char)bb.get());
}
bb.clear();
}
Sy...
Generating a random & unique 8 character string using MySQL
...9f2a7baf3 => eccbc87e
etc.
caveat: I have no idea how many you could allocate before a collision (but it would be a known and constant value).
edit: This is now an old answer, but I saw it again with time on my hands, so, from observation...
Chance of all numbers = 2.35%
Chance of all lette...
system(“pause”); - Why is it wrong?
...summary, it has to pause the programs execution and make a system call and allocate unnecessary resources when you could be using something as simple as cin.get(). People use System("PAUSE") because they want the program to wait until they hit enter to they can see their output. If you want a progra...
What's the best practice to round a float to 2 decimals? [duplicate]
...ecimal instance multiple times each frame accounted for 99.9% of my memory allocations, so something to watch out for. In my opinion @Evan Stin's method 2 is the best answer, it's faster and doesn't leave anything behind.
– hamham
May 26 '16 at 8:56
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Will code in a Finally statement fire if I return a value in a Try block?
...t. Thus, the only place a CER should be relevant is for resources that are allocated outside of the process, e.g., unmanaged handles.
Typically, unmanaged code is wrapped by some managed class before being consumed by user code. The managed wrapper class will typically make use of a SafeHandle to w...
Initializing a list to a known number of elements in Python [duplicate]
...at there are other legitimate cases than optimizations for the wish to pre-allocate an array. It could be the code that uses it doesn't add elements, just replaces existing ones, so it's more like an array than a list.
– Lasse V. Karlsen
Sep 10 '09 at 8:08
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How can I concatenate two arrays in Java?
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@djBo: what about:ByteBuffer buffer = ByteBuffer.allocate(array1.length + array2.length); buffer.put(array1); buffer.put(array2); return buffer.array();
– Sam Goldberg
Dec 2 '11 at 15:29
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