大约有 42,000 项符合查询结果（耗时：0.0383秒） [XML]
How can I output the value of an enum class in C++11
...e else sees this question you can just use the cast technique method above and simply call "static_cast<int>(value)" to get the integer or "static_cast<A>(intValue)" to get an enum value. Just bear in mind that going from int to enum or enum to enum can cause issues and generally is gene...
Select SQL Server database size
... Maybe I'm doing something wrong. I had 100 000 rows that I dropped and then I checked the size given these exampels. Size is still about 14 GB.
– Essej
Sep 22 at 6:39
...
.NET / C# - Convert char[] to string
...
Note that new string(null) yields String.Empty and not null! If you want to keep null, you can make an extension method static string ToStringSafe(this char[] buf) { return buf == null ? null : new string(buf); }.
– Skod
Aug 10 '15 ...
Subqueries vs joins
...don't think this is true. The SQL engine should run the subquery only once and use the result as a list.
– dacracot
Sep 26 '08 at 19:05
8
...
Re-entrant locks in C#
...g on the same object. The recursive code effectively already has the lock and so can continue unhindered.
lock(object) {...} is shorthand for using the Monitor class. As Marc points out, Monitor allows re-entrancy, so repeated attempts to lock on an object on which the current thread already has ...
Exporting APK from eclipse (ADT) silently crashes
Every time I try to export an APK from Eclipse (tried Juno and Indigo) on Mac, eclipse crashes after a few seconds
8 Answer...
(grep) Regex to match non-ASCII characters?
.... One program has a bug that prevents it working with non-ASCII filenames, and I have to find out how many are affected. I was going to do this with find and then do a grep to print the non-ASCII characters, and then do a wc -l to find the number. It doesn't have to be grep; I can use any stan...
Using the scrollwheel in GNU screen
...tach from your screen, then screen -d -r to reattach, then ls a few times, and try to scroll back. It works for me.
What is this magic? Well, let's consult the manual pages.
screen(1) says:
termcapinfo term terminal-tweaks [window-tweaks]
[..]
The first argument specifies which terminal(s)...
How to find the nearest parent of a Git branch?
... have envisioned.
Git’s history is based on a DAG of commits. Branches (and “refs” in general) are just transient labels that point to specific commits in the continually growing commit DAG. As such, the relationship between branches can vary over time, but the relationship between commits do...
How do I get a human-readable file size in bytes abbreviation using .NET?
... to do it, but it's easier to read if you are not familiar with log maths, and should be fast enough for most scenarios.
string[] sizes = { "B", "KB", "MB", "GB", "TB" };
double len = new FileInfo(filename).Length;
int order = 0;
while (len >= 1024 && order < sizes.Length - 1) {
o...