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Error: The 'brew link' step did not complete successfully
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This worked for me. In my case, I couldn't link Elixir and Erlang during an upgrade. The directories of concern were not owned by my username, but owned by "root". I decided to delete those directories and reinstall.
– Coach Roebuck
Mar ...
How to check for a valid Base64 encoded string
...le of 4. But instead of comparing these, you'd be better off ignoring the exception, if it occurs.
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What is a daemon thread in Java?
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A daemon thread is a thread that does not prevent the JVM from exiting when the program finishes but the thread is still running. An example for a daemon thread is the garbage collection.
You can use the setDaemon(boolean) method to change the Thread daemon properties before the thread s...
C++, variable declaration in 'if' expression
...at the user must provide parameters - what do we do then?
Here's another example:
class Test {
public:
// note that no default constructor is provided and user MUST
// provide some value for parameter "p"
Test(int p);
}
if (!((1 == 0) && (Test a = Test(5)))) {
// now what ...
How can I find out the total physical memory (RAM) of my linux box suitable to be parsed by a shell
...ping a shell script to find out the total physical memory in some RHEL linux boxes.
13 Answers
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How to repeat a string a variable number of times in C++?
...way to repeat strings in C++ equivalent to the * operator in Python or the x operator in Perl. If you're repeating a single character, the two-argument constructor (as suggested by previous answers) works well:
std::string(5, '.')
This is a contrived example of how you might use an ostringstream ...
Git Push error: refusing to update checked out branch
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There are dozens of other scenarios, actually. For example, some of my repositories are just on my workstation and my laptop (not code, but notes I take). On each I have two branches, "workstation" and "laptop". On the workstation, I only check out "workstation", and I only pu...
How can I put a database under git (version control)?
...a database dump, and version control that instead. This way it is a flat text file.
Personally I suggest that you keep both a data dump, and a schema dump. This way using diff it becomes fairly easy to see what changed in the schema from revision to revision.
If you are making big changes, you sho...
Are typedef and #define the same in c?
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When things get "hairy", using the proper tool makes it right
#define FX_TYPE void (*)(int)
typedef void (*stdfx)(int);
void fx_typ(stdfx fx); /* ok */
void fx_def(FX_TYPE fx); /* error */
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