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How can I use grep to find a word inside a folder?
... a specific word occurs inside a directory containing many sub-directories and files. My searches for grep syntax shows I must specify the filename, i.e. grep string filename .
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When is JavaScript's eval() not evil?
...tionality). Having parsed the formula I could convert it into JavaScript and run eval() on it to yield the result.
26 A...
Delete all data in SQL Server database
...e all records from all tables of my database? Can I do it with one SQL command or I need for one SQL command per one table?
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How do I print the elements of a C++ vector in GDB?
..., 30}
To achieve above, you need to have gdb 7 (I tested it on gdb 7.01) and some python pretty-printer. Installation process of these is described on gdb wiki.
What is more, after installing above, this works well with Eclipse C++ debugger GUI (and any other IDE using GDB, as I think).
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When should I use std::thread::detach?
... also know join() waits until a thread completes. This is easy to understand, but what's the difference between calling detach() and not calling it?
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applicationWillEnterForeground vs. applicationDidBecomeActive, applicationWillResignActive vs. appli
...to implement when an application is waking up from being in the background and you want it to prep it to be active?
7 Answe...
Bash script processing limited number of commands in parallel
...ple, 4 processes process1 ... process4 would be started in the background, and the shell would wait until those are completed before starting the next set.
From the GNU manual:
wait [jobspec or pid ...]
Wait until the child process specified by each process ID pid or job specification jobsp...
How to replace all occurrences of a character in string?
...
std::string doesn't contain such function but you could use stand-alone replace function from algorithm header.
#include <algorithm>
#include <string>
void some_func() {
std::string s = "example string";
std::replace( s.begin(), s.end(), 'x', 'y'); // replace all 'x' t...
Python: changing value in a tuple
...memory consumption of tuple (60-bytes for one-element) vs list (104 bytes) and make a difference. Another use case is for namedtuples since namedlist doesn't natively exist.
– Michael Scott Cuthbert
Aug 2 '15 at 17:46
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Accessing member of base class
...e super keyword in order to avoid confusion between a specialised function and the base class function. For example, if you called move() or this.move() you would be dealing with the specialised Snake or Horse function, so using super.move() explicitly calls the base class function.
There is no con...