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Getting “unixtime” in Java
...ion discussion (clarified above) was about the data type. Primitive "long" vs "java.lang.Long" class instance. You're talking about the suffix letter on the long literal, which I agree can be upper or lower case. Though lower case "l" looks a heck of a lot like the digit "1" so it's much more reada...
How can I count the occurrences of a list item?
...is not faster by a factor of 2, Counter is faster by a factor of n (O(n^2) vs O(n)).
– Martijn Pieters♦
May 23 '17 at 10:13
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Hidden Features of C++? [closed]
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community wiki
2 revsFerruccio
11
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Do while loop in SQL Server 2008
...cause I'm iterating a cursor, and I'm looking largely for optimal clarity (vs. optimal speed). In T-SQL that seems to fit a WHILE TRUE / IF BREAK.
If that's the scenario that brought you here, this snippet may save you a moment. Otherwise, welcome back, me. Now I can be certain I've been here more ...
Difference between char* and const char*?
...the char to which name points to (https://msdn.microsoft.com/en-us/library/vstudio/whkd4k6a(v=vs.100).aspx, see "Examples"). In this case, the const specifier applies to char, not the asterisk.
According to the MSDN page and http://en.cppreference.com/w/cpp/language/declarations, the const before t...
How do I suspend painting for a control and its children?
...know, but sending "false" does not appear to work in recent versions of c#/VS. I had to change false to 0 and true to 1.
– Maury Markowitz
Sep 21 '15 at 20:20
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How to create a GUID/UUID in Python
...6-7 bits on version info). Or use only 15 bytes (losing 1-2 bits of random vs. UUIDv4) and avoid the need to trim off = signs while also reducing the encoded size to 20 bytes (from 24, trimmed to 22), as any multiple of 3 bytes encodes to #bytes / 3 * 4 base64 characters with no padding required.
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In Clojure, when should I use a vector over a list, and the other way around?
...ctor:
Indexed access performance - You get ~O(1) cost for indexed access vs. O(n) for lists
Appending - with conj is ~O(1)
Convenient notation - I find it both easier to type and to read [1 2 3] than '(1 2 3) for a literal list in circumstances where either would work.
When to use a list:
When...
Which .NET Dependency Injection frameworks are worth looking into? [closed]
...Assembly scanning extensions for Microsoft.Extensions.DependencyInjection.
VS MEF - Managed Extensibility Framework (MEF) implementation used by Visual Studio.
TinyIoC - An easy to use, hassle free, Inversion of Control Container for small projects, libraries and beginners alike.
Original answer f...
Why does Java's hashCode() in String use 31 as a multiplier?
...cause it leads to denser code: The two LEA instructions only take 6 bytes vs. the 7 bytes for move+shift+subtract for the multiplication by 31. One possible caveat is that the 3-argument LEA instructions used here became slower on Intel's Sandy bridge architecture, with an increased latency of 3 c...