size

In an article on MSDN, it states that the double data type has a range of "-1.79769313486232e308 .. 1.79769313486232e308". Whereas the long data type only has a range of "-9,223,372,036,854,775,808 .. 9,223,372,036,854,775,807". How can a double hold so much more data than a long if they are both 64 bits in size? http://msdn.microsoft.com/en-us/library/cs7y5x0x(v=vs.90).aspx will The number of possible doubles, and the number of possible longs is the same, they are just distributed differently*. The longs are uniformly distributed, while the floats are not. You can Read more here . I'd write

I am using the Raphael Javascript library to do some rudimentary drawing for a web page. I am just drawing some lines that radiate out from a point. In Chrome, Firefox, and Opera, these lines are subject to the size of the SVG canvas. This is the desired behaviour, because I want to draw a ray as long as I want but I do not want it to affect the size of the page. If I draw a 5000px wide box, only the part inside the canvas will be visible. However, Internet Explorer (surprise surprise) completely ignores the size and bounds of the canvas and accommodates whatever is drawn. So if I draw a

I have an sqlite table that contains a BLOB file, but need to do a size/length check on the blob, how do I do that? According to some documentation I did find, using length(blob) won't work, because length() only works on texts and will stop counting after the first NULL. My empirical tests have shown this to be true. I'm using SQLite 3.4.2 Updates: So as of SQLite 3.7.6 it appears as though the length() function returns the correct value of blobs - I checked various change-logs of sqlite, but did not see in what version this was corrected. From Sqlite 3.7.6: payload_id|length(payload)|length

In a previous question @Morawski was saying that "a table with 1,000 columns and 44,000 rows It's about 330 MB; that's how much a browser uses for just a few open tabs". How many columns and rows the table should have to tell its size is > 10 GB (suposing the table has only double values). How did @Morawski concluded that 1,000 columns and 44,000 is 330MB ? Is there any script that could tell this in SQL? Alexander V. Yudakov -- Measures tables size (in kilobytes) -- Tested in MS SQL Server 2008 R2 declare @t table ( name nvarchar(100), [rows] int, [reserved] nvarchar(100), [data] nvarchar(100

In many cases, it could be useful to know the number of rows in a table (a kind) in a datastore using Google Application Engine. There is not clear and fast solution . At least I have not found one.. Have you? David Underhill You can efficiently get a count of all entities of a particular kind (i.e., number of rows in a table) using the Datastore Statistics . Simple example: from google.appengine.ext.db import stats kind_stats = stats.KindStat().all().filter("kind_name =", "NameOfYourModel").get() count = kind_stats.count You can find a more detailed example of how to get the latest stats here

This question already has an answer here: How to compute the size of the allocated memory for a general type 1 answer I was interested in the memory usage of matrices in R when I observed something strange. In a loop, I made grow up the number of columns of a matrix and computed, for each step, the object size like this: x <- 10 size <- matrix(1:x, x, 2) for (i in 1:x){ m <- matrix(1, 2, i) size[i,2] <- object.size(m) } Which gives plot(size[,1], size[,2], xlab="n columns", ylab="memory") It seems that matrices with 2 rows and 5, 6, 7 or 8 columns use the exact same memory. How can we explain

I want to set my WPF window's initial client size. I'm not seeing a straightforward way to do this. Specifically, when my window opens, I want it to be sized just big enough for its contents to fit without needing scrollbars. But after it's shown, I want the window to be freely resizable (either larger or smaller). If I set Width and Height attributes on my Window element, that sets the non-client (outer) size, which isn't useful. Once the titlebar and resize borders eat into that space, the client area will no longer be big enough for its content, and I'll have scrollbars. I could compensate