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Why rename synthesized properties in iOS with leading underscores? [duplicate]
...ariables had to be instantiated explicitly:
@interface Foo : Bar {
Baz *_qux;
}
@property (retain) Baz *qux;
@end
@implementation Foo
@synthesize qux = _qux;
- (void)dealloc {
[_qux release];
[super dealloc];
}
@end
People would prefix their instance variables to differentiate them from...
WARN Could not determine content-length of response body. Set content-length of the response or set
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edited Aug 10 '13 at 17:03
Jay Sullivan
13.6k88 gold badges4949 silver badges7777 bronze badges
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Set select option 'selected', by value
...easier way that doesn't require you to go into the options tag:
$("div.id_100 select").val("val2");
Check out the this jQuery method.
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Generate random 5 characters string
... you get a string made of a 16-character set (10 digits and a to f, i.e. 4 bits per string character). This may be enough for some purposes but may be too little for cryptographical purposes (five characters out of 16 symbols = 16^5 = 20 bits = 1048576 possibilities).
– Arc
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What kind of leaks does automatic reference counting in Objective-C not prevent or minimize?
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Brad, the link from Chris Lattner is dead. I'm not 100% but I found this other link. Which I think is what you wanted to link to: lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20160208/…
– Honey
Oct 6 '18 at 16:06
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Does a javascript if statement with multiple conditions test all of them?
...there is a way to force the evaluation of all condition, in some cases the bitwise operators & and | can be used
var testOr = true | alert(""); //alert pops up
var testAnd = false & alert(""); //alert pops up
These should be used really carefully because bitwise operators are arithmetic o...
Best way to assert for numpy.array equality?
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answered Jul 22 '10 at 22:33
JosefJosef
17.6k33 gold badges4141 silver badges5656 bronze badges
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Parsing CSV files in C#, with header
...uggest to Josh to update his answer here because the library has changed a bit since this answer was written and you cannot instantiate CsvHelper anymore (it's only a namespace now) but you have to use the CsvReader class.
– Marko
Aug 5 '13 at 20:04
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Is there a version control system for database structure changes?
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I'm a bit old-school, in that I use source files for creating the database. There are actually 2 files - project-database.sql and project-updates.sql - the first for the schema and persistant data, and the second for modifications...
How can I connect to a Tor hidden service using cURL in PHP?
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You need to set option CURLOPT_PROXYTYPE to CURLPROXY_SOCKS5_HOSTNAME, which sadly wasn't defi...