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Does anyone know of a C++ library that will provide a text-based interactive interface? I want to create two versions of an application; a console based program that will perform whatever actions are given on the command line or interactively at the console as well as a GUI based program (Mac Cocoa and Windows MFC). Both versions will share a common C++ backend. For the console based program I would like similar history abilities to readline (which I cannot use as this application will be closed source) with command completion (Tab-activated for example). Perhaps there is something like this

查看sysaux表空间使用排行 select SEGMENT_NAME,BYTES/1024/1024/1024 DGD from dba_segments where tablespace_name='SYSAUX' ORDER BY DGD DESC; I_WRI$_OPTSTAT_H_ST WRI$_OPTSTAT_HISTGRM_HISTORY I_WRI$_OPTSTAT_H_OBJ#_ICOL#_ST 这问题是由最近一个数据库SYSAUX使用空间过多引出来的. SM/OPTSTAT是用于存储老的统计信息，10G之前，当对表/字段/索引做了相应的统计信息之后，新的统计信息就会覆盖老的统计信息，也就是说的无法直接找回统计信息，要找回，只能事先通过dbms_stats导出来。10G就不必了，它会自动的存到相应的表里，而这些表是存在sysaux的，但这也引出了一个问题：如果这些表的数据不断的增长，而不把老的数据删除的话，sysaux迟早会暴了的。默认的情况下,系统会为SM/OPTSTAT保留31天的记录，可以通过dbms_stats.get_stats_history_retention来确定。这里的统计信息跟AWR是有区别的, AWR默认保留7天. SM/OPTSTAT保留的时间可以通过dbms_stats.alter_stats_history_retention来控制

Closed. This question is off-topic. It is not currently accepting answers. Learn more . Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 10 years ago . Anybody knows where the " :// " or the " // " comes from in most URIs syntaxes? For instance, why isn't it written like " http:www.example.com "? a1kmm's answer is good for specific application to URLs, but if you're curious as to the semantic origin of the double slash, take a look at this article: http://www.w3.org/DesignIssues/Axioms.html It is worth noting that the syntax with the double slash

Here's a blast from the past: what does "REM", the comment marker, stand for in BASIC? What's the origin of this non-obvious term? I believe it stands for "Remark", that is, a comment. From the MSDN site : Used to include explanatory remarks in the source code of a program. It was REMark, back in the late Steam Age (ca. 1971 or so), when I first encountered BASIC. Most approachable book I've ever found on the language was "My Computer Likes Me (When I Speak In BASIC)", or something like that. For extra credit and mondo greybeard rep points: BASIC is an acronym (maybe a backronym, but whatever)

Every time in PHP when I make a variable such as this one: $date = strtotime($row['date']); $date = date("M d Y \a\\t g:i A", $date); // Mmm dd YYYY at h:mm PM/AM and somehow row['date'] happens to be 0, the date Dec 31 1969 at 7:00 PM is displayed on the screen? Google does not tell me much, I was wondering if this date had any significances. The Unix epoch is the time 00:00:00 UTC on 1 January 1970. This is the reference point for all time stamps. When you use PHP's date/time functions, you're always working with the number of seconds since the epoch. Time 0 is the epoch, and you (or your