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How to concatenate two strings in C++?
...t to runtime performance. Worst case is, that operator+= performs both a deallocation and an allocation. Heap allocations are among the most expensive operations we commonly do.
– IInspectable
Feb 7 at 12:17
...
How to initialize a private static const map in C++?
... int>’ as ‘this’ argument of ‘std::map<_Key, _Tp, _Compare, _Alloc>::mapped_type& std::map<_Key, _Tp, _Compare, _Alloc>::operator[](const key_type&) [with _Key = int; _Tp = int; _Compare = std::less<int>; _Alloc = std::allocator<std::pair<const int, int>...
How to manually set an authenticated user in Spring Security / SpringMVC
...SecurityContextHolder is not updated
UsernamePasswordAuthenticationToken token = new UsernamePasswordAuthenticationToken(username, password);
token.setDetails(new WebAuthenticationDetails(request));
Authentication authentication = this.authenticationProvider.authenticate(toke...
How do I remove the Devise route to sign up?
...giving you this problem:
Started GET "/users/invitation/accept?invitation_token=xxxxxxx" for 127.0.0.1
Processing by Devise::InvitationsController#edit as HTML
Parameters: {"invitation_token"=>"6Fy5CgFHtjWfjsCyr3hG"}
[Devise] Could not find devise mapping for path "/users/invitation/accept? ...
Convert a binary NodeJS Buffer to JavaScript ArrayBuffer
...
From ArrayBuffer to Buffer:
function toBuffer(ab) {
var buf = Buffer.alloc(ab.byteLength);
var view = new Uint8Array(ab);
for (var i = 0; i < buf.length; ++i) {
buf[i] = view[i];
}
return buf;
}
...
What function is to replace a substring from a string in C?
..., rep); ++count) {
ins = tmp + len_rep;
}
tmp = result = malloc(strlen(orig) + (len_with - len_rep) * count + 1);
if (!result)
return NULL;
// first time through the loop, all the variable are set correctly
// from here on,
// tmp points to the end of th...
Effects of changing Django's SECRET_KEY
... salted hmacs or seeding the random engine which impacts:
password reset token
comment form security to protect against forged POST requests
form security
protect against message tampering as the message framework may use cookies to pass messages between views.
protect session data and create rand...
UIBarButtonItem with custom image and no border
...UIControlStateNormal];
UIBarButtonItem *random = [[UIBarButtonItem alloc] initWithCustomView:a1];
//? line incomplete ?// imageNamed:@"random.png"] style:UIBarButtonItemStylePlain target:self action:@selector(randomMsg)];
self.navigationItem.rightBarButtonItem = random;
...
Getting “Skipping JaCoCo execution due to missing execution data file” upon executing JaCoCo
...ing. 2. In Travis environment variables for my project, had typo in SONART_TOKEN=*****, should have been named SONAR_TOKEN=*****. See Travis docs here, search for or define SONAR_TOKEN in your Repository Settings. After I fixed that, build ran successfully. You may view my gitbhub project in questio...
Structs versus classes
...ject known to be alive as alive. The object on the stack can refer to heap-allocated objects that need to be kept alive, so the GC has to treat stack objects like living heap-allocated objects for the purposes of determining the live set. But obviously they are not treated as "live objects" for the...