Origins of the name 'main' for program entry point?
Out of curiosity, what are the origins of the name 'main' for a program entry point? ...
history
How do I determine whether I am going "forward" or "backward" through my History in GWT?
I am looking at History and History JavaDocs in GWT and I notice that there is no way to tell whether the forward or backward button was pressed (either pragmatically or by the user). The "button press" is handled by your registered addValueChangeHandler, but the only thing passed to the handler is a string on your history stack. There ...
html cache history back
if i use history.back() for button press then what will happen? html content will be displayed from local history of browser or cache and browser dont request to server? or browser request to server based on url resides in history of browser?? ...
How to duplicate all data in a table except for a single column that should be changed.
I have a question regarding a unified insert query against tables with different data structures (Oracle). Let me elaborate with an example: tb_customers ( id NUMBER(3), name VARCHAR2(40), archive_id NUMBER(3) ) tb_suppliers ( id NUMBER(3), name VARCHAR2(40), contact VARCHAR2(40), xxx, xxx, archive_id NUMBER(3...
Programming Constructs History
Let us research and trace back the origins of language constructs. For example: Constructs Introduced from LISP If-Else Block :"The ubiquitous if-then-else structure, now taken for granted as an essential element of any programming language, was invented by McCarthy for use in Lisp, where it saw its first appearance in a more gener...
where does the term flat-file come from?
I was wondering if anyone knows. Is 'flat' the opposite of hierarchal? Does it come from a phrase like, "this is a flat-out regular file"? ...
How to get previous versions of a spreadsheet with Google Docs API?
The "previous version" interface on Google Docs is very primitive. It wouldn't even allow you to select two arbitrary versions for comparison (but correct me if I'm wrong.) How can I access the previous versions via the API? ...
Producing an view of a text's revision history in Python
I have two versions of a piece of text and I want to produce an HTML view of its revision similar to what Google Docs or Stack Overflow displays. I need to do this in Python. I don't know what this technique is called but I assume that it has a name and hopefully there is a Python library that can do it. Version 1: William Henry "...
Data in column not changed
I have sql 2005 and when i run below query, data from RealTimeLog table transfer to History but when new data come in RealTimeLog table old data not changed by new one means OutTime data is not changed with new data from RealTimeLog. insert into History (UserID,UserName,LogDate, [InTime], [OutTime]) SELECT UserID,UserName,[LogDate],CONV...
Did Java invent interfaces?
I know about C++ pure virtual classes, but Java went one step further and created a first-class (no pun intended) concept for multiple-interface (not implementation) inheritance, the interface. It's now a staple of major statically-typed languages. Did Java invent the interface concept? Or did it appear in older languages also as a first...
SVN - Retrieve history of item "replaced into" existing directory
I created a branch from my SVN trunk. In the branch, another developer deleted a directory, but then readded it with the same files. When I merged the changes from the branch back into the trunk (using TortoiseSVN), this directory had a "replace into" message. I unfortunately merged those in (none of these files in the branch had chan...
why does vb.net not support multiple inheritance?
I've seen some discussion on why c# does not implement multiple inheritance but very little as to why it isn't supported in vb. I understand that both c# and vb are compiled down to intermediary language and so they both need to share similar restrictions. The lack of multiple inheritance in VB seems to have been given as one reason fo...
Is there any kind of standard for 8086 multiprocessing?
Back when I made an 8086 emulator I noticed that there was the LOCK prefix intended for synchonization in a multiprocessor environment. Yet the only multitasking I know of for the x86 arch. involves use of the APIC which didn't come around until either the Pentiums or 486s. Was there any kind of standard for 8086 multitasking or was it...
Show number of changed lines per author in git
i want to see the number of removed/added line, grouped by author for a given branch in git history. there is git shortlog -s which shows me the number of commits per author. is there anything similar to get an overall diffstat? ...
Can I get hg log to print the history in reverse order?
If not, is this a feature that git has? ...
Can I get git log to print the history in reverse order?
I recently learned that I can get hg log to print the history in reverse order with: hg log -r : So of course I tried: git log -r : Well, it didn't work. So what is the command to do the same thing in git? ...
How can I (from a script) add something to the zsh command history?
I'd like to be able to look through my command history and know the context from which I issued various commands--in other words, "what directory was I in?" There are various ways I could achieve this, but all of them (that I can think of) would require manipulating the zsh history to add (for instance) a commented line with the result ...
Why is RAISERROR misspelled? Or is it not?
Why isn't RAISERROR spelled RAISEERROR? Where is the second E? I could understand if it were some ancient keyword length constraint, but I wouldn't expect it to be a nine-character limit. Is RAIS or RROR a technical word such that "raise-error" is just a mis-reading? Are its (immediate) origins in a different language? I've search...
Programming Concepts That Were "Automated" By Modern Languages
Weird question but here it is. What are the programming concepts that were "automated" by modern languages? What I mean are the concepts you had to manually do before. Here is an example: I have just read that in C, you manually do garbage collection; with "modern" languages however, the compiler/interpreter/language itself takes care of...
SQL query - choosing 'last updated' record in a group, better db design?
Hi, Let's say I have a MySQL database with 3 tables: table 1: Persons, with 1 column ID (int) table 2: Newsletters, with 1 column ID (int) table 3: Subscriptions, with columns Person_ID (int), Newsletter_ID (int), Subscribed (bool), Updated (Datetime) Subscriptions.Person_ID points to a Person, and Subscription.Newsletter_ID points t...