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Difference between float and decimal data type
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Actually, the DECIMAL addition is in error. If you add 33.333333333 three times you don't get 100. If you divide 100 by 3 you don't get a rational number without a repeating set of trailing digits, so you can't multiply it by 3 a...
Take screenshots in the iOS simulator
... a screen shot. Or
Using Mac Keyboad: Press keys ⌥ Option + ⌘ + s all together.
It will show to a dialog with file storage options and also allows to set/change default path.
Tip 3: How to take a screen shot with Device Bezel?
Enable Show Device Bezel from Window menu.
Here is an op...
A semantics for Bash scripts?
...patchwork together little scripts that appear to work. However, I don't really know what's going on, and I was hoping for a more formal introduction to Bash as a programming language. For example: What is the evaluation order? what are the scoping rules? What is the typing discipline, e.g. is ever...
How to see what will be updated from repository before issuing “svn update” command?
...nNumber --summarize
if you want to see what will be updated (without actually updating), run
command:
$ svn merge --dry-run -r BASE:HEAD .
if you want to know what content of a particular file has been changed in svn
server repository compared with your working copy, run command:
$ svn dif...
Make elasticsearch only return certain fields?
...fields from there. May impact performance if returned data is relatively small to the size of a whole document.
– Zaar Hai
Aug 18 '13 at 10:19
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What is the concept of erasure in generics in Java?
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It's basically the way that generics are implemented in Java via compiler trickery. The compiled generic code actually just uses java.lang.Object wherever you talk about T (or some other type parameter) - and there's some metadata to t...
JavaScript function order: why does it matter?
JSHint complains when my JavaScript calls a function that is defined further down the page than the call to it. However, my page is for a game, and no functions are called until the whole thing has downloaded. So why does the order functions appear in my code matter?
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Inline comments for Bash?
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Commenting in a Bash script
This will have some overhead, but technically it does answer your question
echo abc `#put your comment here` \
def `#another chance for a comment` \
xyz etc
And for pipelines specifically, there is a cleaner solution with no overhead
echo abc | ...
Best way to check if UITableViewCell is completely visible
...in.x = 0, origin.y = 0, width = 0, height = 0? although on UI they are not all 0s, I am using auto layout, any ideas?
– RainCast
Apr 18 '16 at 21:20
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Which, if any, C++ compilers do tail-recursion optimization?
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All current mainstream compilers perform tail call optimisation fairly well (and have done for more than a decade), even for mutually recursive calls such as:
int bar(int, int);
int foo(int n, int acc) {
return (n == 0)...