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Where do “pure virtual function call” crashes come from?
...s "pure virtual function call" scenario usually happens when the object is allocated on the memory pool, while an object is deleted, the underlying memory is actually not reclaimed by OS, it is still there accessible by the process.
...
How do I convert struct System.Byte byte[] to a System.IO.Stream object in C#?
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There's extra space allocated in the MemoryStream buffer by default (just like with e.g. a list). This can be dealt with easily by using the overload that allows you to set capacity, but is only really useful if you don't expect to write any dat...
Why can't I define a default constructor for a struct in .NET?
... new MyStruct[1000];
The CLR is able to do this very efficiently just by allocating the appropriate memory and zeroing it all out. If it had to run the MyStruct constructor 1000 times, that would be a lot less efficient. (In fact, it doesn't - if you do have a parameterless constructor, it doesn't...
How is the Linux kernel tested ?
.../debug/kmemleak.
Kmemcheck traps every read and write to memory that was allocated dynamically (i.e. with kmalloc()). If a memory address is read that has not previously been written to, a message is printed to the kernel log. Also is a part of Linux Kernel
Fault Injection Framework (included in ...
Android. Fragment getActivity() sometimes returns null
...eFragment() {
// Implement the Parent.
super();
// Allocate the ActivityBuffer.
this.mActivityBuffer = new ActivityBuffer();
}
@Override
public final void onAttach(final Context pContext) {
// Handle as usual.
super.onAttach(pContext);
...
How can I shuffle the lines of a text file on the Unix command line or in a shell script?
...ort -R (not a true shuffle if there are duplicate input lines)
10.661s - allocating more memory doesn't seem to make a difference
Scala
24.229s
bash loops + sort
32.593s
Conclusions:
Use shuf, if you can - it's the fastest by far.
Ruby does well, followed by Perl.
Python is noticeably s...
What does enctype='multipart/form-data' mean?
...k the syntax of the request by eye. Please don't use them in your boundary tokens.
– Dewi Morgan
Nov 11 '19 at 17:01
1
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Best way to reverse a string
... (input == null)
throw new ArgumentNullException("input");
// allocate a buffer to hold the output
char[] output = new char[input.Length];
for (int outputIndex = 0, inputIndex = input.Length - 1; outputIndex < input.Length; outputIndex++, inputIndex--)
{
// check ...
Architecture for merging multiple user accounts together
... service wasn't yet around. After verifying with OAuth, you pass the OAuth token to it and get a unique user id which you can store for reference. Supported providers are Google, Facebook, Twitter, GitHub and there is an option to register custom and anonymous providers.
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Significance of bool IsReusable in http handler interface
... instance value will survive GC cycles and do not need to be frequently re-allocated.
Another caveat is you need to be sure that at the end of the ProcessRequest execution the object state is as you would want for another request to reuse the object.
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