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Are string.Equals() and == operator really same? [duplicate]
... (string) y;
// Now *this* will call ==(string, string), comparing values appropriately
if (xs == ys) // Yes
Equals will go bang if you call it on null, == won't
string x = null;
string y = null;
if (x.Equals(y)) // Bang
if (x == y) // Yes
Note that you can avoid the latter being a problem u...
process.waitFor() never returns
...eason is that the process produces some output and you don't read from the appropriate streams. This means that the process is blocked as soon as the buffer is full and waits for your process to continue reading. Your process in turn waits for the other process to finish (which it won't because it w...
Handle ModelState Validation in ASP.NET Web API
...but same basic principle for XML):
HTTP/1.1 400 Bad Request
Content-Type: application/json; charset=utf-8
(some headers removed here)
["A value is required.","The field First is required.","Some custom errorm essage."]
You can of course construct your error object/list any way you like, for exam...
unit testing of private functions with mocha and node.js
I am using mocha in order to unit test an application written for node.js
9 Answers
9
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What is the most efficient way to store a list in the Django models?
...the root of all evil."
With that firmly in mind, let's do this! Once your apps hit a certain point, denormalizing data is very common. Done correctly, it can save numerous expensive database lookups at the cost of a little more housekeeping.
To return a list of friend names we'll need to create a ...
UITableViewCell with UITextView height in iOS 7?
...ou can work around it by making the relevant calls from there or using the appropriate NSNotificationCenter hooks.
- (void)textViewDidChange:(UITextView *)textView {
[self.tableView beginUpdates]; // This will cause an animated update of
[self.tableView endUpdates]; // the height of your ...
SQLite add Primary Key
... Please bestow your wisdom upon us. Clearly you want people to know you disapprove of the answer or something that one of the commenters said, however your comment contains no information at all, beside an apparent intent to convey superiority and snark.
– Nathan Ridley
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PostgreSQL ERROR: canceling statement due to conflict with recovery
... RDS instance, check http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Appendix.PostgreSQL.CommonDBATasks.html
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My Git repository is in the wrong root directory. Can I move it? (../ instead of ./)
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the answer below is a much better approach since it retains all the history
– BigMikeW
Jul 5 '17 at 1:16
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Approximate cost to access various caches and main memory?
Can anyone give me the approximate time (in nanoseconds) to access L1, L2 and L3 caches, as well as main memory on Intel i7 processors?
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