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Entity Framework: “Store update, insert, or delete statement affected an unexpected number of rows (
... telling you is that between when you grabbed the data out of the database and when you saved your changes someone else has changed the data (Which meant when you went to save it 0 rows actually got updated). In SQL terms, their update query's where clause contains the original value of every field ...
How to center align the cells of a UICollectionView?
I am currently using UICollectionView for the user interface grid, and it works fine. However, I'd like to be enable horizontal scrolling. The grid supports 8 items per page and when the total number of items are, say 4, this is how the items should be arranged with horizontal scroll direction ena...
Is there a cross-browser onload event when clicking the back button?
... does nothing. But somehow this seems to trigger a reload in Safari, Opera and Mozilla -- no matter what the event handler contains.
[edit(Nickolay): here's why it works that way: webkit.org, developer.mozilla.org. Please read those articles (or my summary in a separate answer below) and consider w...
Use rvmrc or ruby-version file to set a project gemset with RVM?
I use RVM, the Ruby Version Manager to specify a Ruby version and a set of gems for each of my Rails projects.
5 Answers
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Suggestions for debugging print stylesheets?
I've recently been working on a print stylesheet for a website, and I realized that I was at a loss for effective ways to tweak it. It's one thing to have a reload cycle for working on the on-screen layout:
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Dealing with “Xerces hell” in Java/Maven?
... users are "touched" by this problem at some point. Unfortunately, understanding the problem requires a bit of knowledge about the history of Xerces...
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How can I create a “Please Wait, Loading…” animation using jQuery?
...relation to the viewport window
with position:fixed. Width, height, top and left speak
for themselves. Background we set to 80% white with
our animation centered, and no-repeating */
.modal {
display: none;
position: fixed;
z-index: 1000;
top: 0;
left: ...
How to convert floats to human-readable fractions?
...y what you are asking for. Its based on the theory of continued fractions and very fast and fairly compact.
I have used versions of this customized for specific numerator and denominator limits.
/*
** find rational approximation to given real number
** David Eppstein / UC Irvine / 8 Aug 1993
**
*...
How to use shell commands in Makefile
I'm trying to use the result of ls in other commands (e.g. echo, rsync):
2 Answers
2...
What is the difference between Builder Design pattern and Factory Design pattern?
What is the difference between the Builder design pattern and the Factory design pattern?
27 Answers
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