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Reading binary file and looping over each byte
... @usr: Well the file objects are buffered internally, and even so this is what was asked for. Not every script needs optimal performance.
– Skurmedel
Jul 8 '12 at 19:12
4
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Why prefer two's complement over sign-and-magnitude for signed numbers?
...ve at it in the first place? If suppose I need to arrive at this notation, what would the thought process be. I think arriving at 2's complement has to be more than just luck, isn't it?
– Lazer
Apr 18 '10 at 17:15
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memory_get_peak_usage() with “real usage”
...mple given in the answer is way too simple as there's no "wasted" memory". What happens is that the "real" allocated memory needs to be increased from "1 MiB" to "1.25 MiB" and that's what triggers the fatal error. I have a complex batch script with memory limit of 120 MiB that have "not real" alloc...
Which is faster: while(1) or while(2)?
...n to read! If I see while(1) in an unfamiliar codebase, I immediately know what the author intended, and my eyeballs can continue to the next line.
If I see while(2), I'll probably halt in my tracks and try to figure out why the author didn't write while(1). Did the author's finger slip on the keyb...
SQL select join: is it possible to prefix all columns as 'prefix.*'?
...entify the columns in your SQL expression. And the easiest way to find out what the default is, is just to submit such a query and see what you get back. If you want to specify what prefix comes before the dot, you can use "SELECT * FROM a AS my_alias", for instance.
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Guaranteed lifetime of temporary in C++?
...urns and the value is evaluated. So, it will work all nice.
It's in fact what makes expression templates work: They can keep hold references to that sort of temporaries in an expression like
e = a + b * c / d
Because every temporary will last until the expression
x = y
Is evaluated complete...
Difference between := and = operators in Go
What is the difference between the = and := operators, and what are the use cases for them? They both seem to be for an assignment?
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Sorting object property by values
...ld the object from the array in the order you like, thus achieving exactly what you set out to do. That would work in all the browsers I know of, but it would be dependent on an implementation quirk, and could break at any time. You should never make assumptions about the order of elements in a Java...
How to make a JSONP request from Javascript without JQuery?
... don't think that's doable with JSONP. It's a hack from the pre-CORS days. What do you need to set headers for? The server specifically needs to accept JSONP requests so it should be set up to serve in a sane manner.
– Matt Ball
Aug 14 '16 at 21:54
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How to identify numpy types in python?
...ish, add an or to test for that. And so on. The point is, you have to know what you're actually asking for when you want to do something as unusual as loose manual type switching, but once you know, it's easy to implement.
– abarnert
Mar 11 '16 at 20:41
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