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How do I set up a simple delegate to communicate between two view controllers?
...unately, I'm getting a "Cannot find protocol declaration for 'MyProtocol'" error when I try to compile. It's as you described, though: the spawned viewcontroller has the procotol definition in its .h file and invokes the protocol method in its .m file. The hosting viewcontroller has <MyProtocol...
Optional Parameters with C++ Macros
...
XXX_4(1,2,3,4);
5;
PS: Remove the #define for XXX_0 to get a compile error [ie: if a no-argument option is not allowed].
PPS: Would be nice to have the invalid situations (eg: 5) be something that gives a clearer compilation error to the programmer!
PPPS: I'm not an expert, so I'm very happy...
NodeJS require a global module/package
...ckage required by old npm
if (!fs.existsSync(packageDir))
throw new Error('Cannot find global module \'' + packageName + '\'');
var packageMeta = JSON.parse(fs.readFileSync(path.join(packageDir, 'package.json')).toString());
var main = path.join(packageDir, packageMeta.main);
return r...
Execute combine multiple Linux commands in one line
...colons not always works. E.g. ls >/dev/null & ; echo $! triggers an error.
– Hi-Angel
Nov 6 '14 at 8:52
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What should my Objective-C singleton look like? [closed]
...y and do something like [[MySingelton alloc] init] you will get a run time error (though not a compile time error unfortunately). I don't understand how all the details of the object creation, but you implement + (id) allocWithZone:(NSZone *)zone which is called in sharedSingleton
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Strip HTML from Text JavaScript
...h HTML from an untrusted source. To see why, try running strip("<img onerror='alert(\"could run arbitrary JS here\")' src=bogus>")
– Mike Samuel
Sep 22 '11 at 18:06
26
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403 Forbidden vs 401 Unauthorized HTTP responses
...s a problem with 401 Unauthorized, the HTTP status code for authentication errors. And that’s just it: it’s for authentication, not authorization.
Receiving a 401 response is the server telling you, “you aren’t
authenticated–either not authenticated at all or authenticated
incorrectl...
self referential struct definition?
...ive things... I would like each cell to contain another cell, but I get an error along the lines of "field 'child' has incomplete type". What's up?
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How should equals and hashcode be implemented when using JPA and Hibernate
...d; otherwise you may end up with strange behavior (ultimately resulting in errors and / or data corruption) because your entity may be allocated to a bucket not matching its current hashCode().
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Why is “import *” bad?
...ity).
Because you can't use cool tools like pyflakes to statically detect errors in your code.
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