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How do I make the first letter of a string uppercase in JavaScript?
...uage feature. Just because Prototype.js extended Object itself for a brief time, doesn't mean extending Natives is bad. You shouldn't do it if you're writing code for an unknown consumer (like an analytics script that goes on random sites), but other than that it's fine.
– csuw...
Can I “multiply” a string (in C#)?
...g();
return _s;
}
I think I pulled that one from Stack Overflow some time ago, so it is not my idea.
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Compare given date with today
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strtotime($var);
Turns it into a time value
time() - strtotime($var);
Gives you the seconds since $var
if((time()-(60*60*24)) < strtotime($var))
Will check if $var has been within the last day.
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TypeScript function overloading
...ypeScript would do it if there was a reliable way of checking types at run time.
– thorn̈
Mar 14 '16 at 23:04
4
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Sending a mail from a linux shell script
...t; is used to redirect standard input. It's been a part of bash for a long time.
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Getting all names in an enum as a String[]
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Why call values() 13 times, generating a new array each time, instead of caching the array in a local variable? Why use toString(), which is overridable, instead of name()?
– JB Nizet
Dec 9 '12 at 0:12
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Java - get pixel array from image
...aster than the first approach.
In my application I was able to reduce the time of processing the pixels by more than 90% by just switching from the first approach to the second!
Here is a comparison I've setup to compare the two approaches:
import java.awt.image.BufferedImage;
import java.awt.ima...
Determine function name from within that function (without using traceback)
...ame().f_code.co_name)
Note that the inspect.stack calls are thousands of times slower than the alternatives:
$ python -m timeit -s 'import inspect, sys' 'inspect.stack()[0][0].f_code.co_name'
1000 loops, best of 3: 499 usec per loop
$ python -m timeit -s 'import inspect, sys' 'inspect.stack()[0][...
Structure padding and packing
... It will look at the memory as a big row of 8 bytes building blocks. Every time it needs to get some information from the memory, it will reach one of those blocks and get it.
As seem in the image above, doesn't matter where a Char (1 byte long) is, since it will be inside one of those blocks, re...
How to parse JSON in Scala using standard Scala classes?
...ultFormats
lazy val json: json4s.JValue = parse(log)
lazy val create_time: String = (json \ "create_time").extractOrElse("1970-01-01 00:00:00")
lazy val site_id: String = (json \ "site_id").extractOrElse("")
lazy val alipay_total_price: Double = (json \ "alipay_total_price").extractOpt[Str...