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How to remove all the occurrences of a char in c++ string
...d::string output;
output.reserve(str.size()); // optional, avoids buffer reallocations in the loop
for(size_t i = 0; i < str.size(); ++i)
if(str[i] != 'a') output += str[i];
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Get child node index
...es). Array.prototype.indexOf accesses that implementation directly without allocating an anonymous instance. The difference is going to be negligible in almost all circumstances, so frankly it may not be worth caring about.
– Scott Miles
Jun 24 '15 at 17:03
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Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize
...XX:MaxMetaspaceSize option.
-XX:PermSize=size
Sets the space (in bytes) allocated to the permanent generation that triggers a garbage collection if it is exceeded. This option was deprecated in JDK 8, and superseded by the -XX:MetaspaceSize option.
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How do I make background-size work in IE?
...ingMethod='scale')";
However, this scales the entire image to fit in the allocated area, so if you're using a sprite, this may cause issues.
Specification: AlphaImageLoader Filter @microsoft
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C++ - passing references to std::shared_ptr or boost::shared_ptr
... a shared_ptr continuing to be non-null throughout, is for the function to allocate its own true shared_ptr, rather than relying on a reference to an existing shared_ptr.
The downside is that copied a shared_ptr is not free: even "lock-free" implementations have to use an interlocked operation to h...
Best way to clear a PHP array's values
... emptying it. When dealing with memory you know it's not the same thing as allocation is slow. So, despite the ease of use, re-instantiation might not be the answer to this question, especially if one needs to do it a lot of times and quickly. It might work, but that would heavily rely on PHP memory...
Lisp in the real world
...ect has been designed, proved to be viable, and enough money/attention got allocated. a well-connected bigger company took over, and wrote its own version in java. one interesting tidbit is that they kept on running our codebase for years. i helped them with a day of consulting...
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What open source C++ static analysis tools are available? [closed]
...a copy constructor and an assignment operator for classes with dynamically allocated memory.
Prefer initialization to assignment in constructors.
Make destructors virtual in base classes.
Have "operator=" return a reference to *this.
Don’t try to return a reference when you must return an object.
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Rails: Is there a rails trick to adding commas to large numbers?
... either , or . for decimal digits, even if you specify it as argument). It allocates thousands of objects (so its performance patterns are complex and hard to profile). Consider just using regexps if you don't need to support different ways to format numbers depending on locale.
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Open and write data to text file using Bash?
...lly holds a lot. Usually the max number of file descriptors the kernel can allocate can be found in /proc/sys/file-max or /proc/sys/fs/file-max but using any fd above 9 is dangerous as it could conflict with fd's used by the shell internally. So don't bother and only use fd's 0-9. If you need more t...