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Fastest way to check if a file exist using standard C++/C++11/C?
...ell I threw together a test program that ran each of these methods 100,000 times, half on files that existed and half on files that didn't.
#include <sys/stat.h>
#include <unistd.h>
#include <string>
#include <fstream>
inline bool exists_test0 (const std::string& name) ...
querySelector search immediate children
...
Correct at the time of writing, but see @avetisk's answer for an updated method.
– lazd
Jan 15 '14 at 0:44
add a co...
How to determine whether code is running in DEBUG / RELEASE build?
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can I change this macro programatically at run time? I want to enable a button that switches to production APIs. On that button, I want to change DEBUG to 0 and display the message that user needs to restart the app. So next time it will use production APIs.
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What is the usefulness of `enable_shared_from_this`?
...e a shared_ptr the normal way before you call shared_from_this() the first time! This is really easy to get wrong! Before C++17 it is UB to call shared_from_this() before exactly one shared_ptr has been created the normal way: auto sptr = std::make_shared<S>(); or shared_ptr<S> sptr(new ...
TypeError: 'str' does not support the buffer interface
...tes
4 #always gives bytes.len not str.len
All this time you thought you were asking for the len of a string in py2, you were getting the length of the byte array from the encoding. That ambiguity is the fundamental problem with double-duty classes. Which version of any method...
Check free disk space for current partition in bash
...ho "Hostname: $(hostname)" >>$MAILMESSAGE
echo "Date & Time: $(date)" >>$MAILMESSAGE
# Email letter formation here:
echo -e "\n[ $(date +%Y%m%d_%H%M%S%Z) ] Current Status:\n\n" >>$MAILMESSAGE
cat $sMess >>$MAILMESSAGE
ec...
Does the use of the “Async” suffix in a method name depend on whether the 'async' modifier is used?
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Well its a shame we don't have compile time checks for method calls.. oh wait. If I name the Method Get or GetAsync and don't use await from the calling side, the compile will fail to build. So this convention is SILLY and really going against many Microsoft Style...
Linux - Replacing spaces in the file names
... with quotes(from awk); then the substituted name
xargs takes 2 lines at a time and passes it to mv
share
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impro
Benefits of inline functions in C++?
...ntee that it will be inline. It's just a suggestion to the compiler. Sometimes it's not possible such as when you have a virtual function, or when there is recursion involved. And sometimes the compiler just chooses not to use it.
I could see a situation like this making a detectable difference...
Are there strongly-typed collections in Objective-C?
...e).
Objective-C has dynamic typing as a feature, which means that the runtime doesn't care about the type of an object since all objects can receive messages. When you add an object to a built-in collection, they are just treated as if they were type id. But don't worry, just send messages to thos...