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Limiting the number of records from mysqldump?
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What does the "1" before limit do?
– Phob
Jul 14 '11 at 23:29
31
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When should I use a NoSQL database instead of a relational database? Is it okay to use both on the s
...n and suitable for 99% of the real world applications. You can practically do anything with relational databases.
But, there are limitations on speed and scaling when it comes to massive high availability data stores. For example, Google and Amazon have terabytes of data stored in big data centers....
Java - get pixel array from image
...el (x, y) from the image using int[x][y] . All the methods I have found do not do this (most of them return int[] s).
7...
How to remove only underline from a:before?
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As far as I can see, this does not work in Internet Explorer (tested 8-10). Any ideas how to deal with IE?
– Linus Caldwell
Oct 17 '13 at 17:08
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UITextField border color
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In iOS 7 you must set a border width or the color does not take effect.
– Micah
Mar 26 '14 at 19:46
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Factors in R: more than an annoyance?
...fferent: see this email or ?"[.data.frame". Using drop=TRUE on data.frames does not work as you'd imagine:
x <- subset(iris, Species == 'setosa', drop=TRUE) # susbetting with [ behaves the same way
x$Species
# [1] setosa setosa setosa setosa setosa setosa setosa setosa setosa setosa
# [11] set...
Using std Namespace
...flict is something like the following. Imagine that you are a beginner and don't know about std::count. Imagine that you are either using something else in <algorithm> or it's been pulled in by a seemingly unrelated header.
#include <algorithm>
using namespace std;
int count = 0;
int ...
How do I check if a string is a number (float)?
...d be faster than the above. It calls the function and returns. Try/Catch doesn't introduce much overhead because the most common exception is caught without an extensive search of stack frames.
The issue is that any numeric conversion function has two kinds of results
A number, if the number is...
How can I know which parts in the code are never used?
...le code at once in great detail and find all the flow paths. In practice I don't know any that would work here.
The pragmatic one is to use an heuristic: use a code coverage tool (in the GNU chain it's gcov. Note that specific flags should be passed during compilation for it to work properly). You r...
What is the difference between a thread and a fiber?
...d stop in well-defined places so data integrity is much less of an issue", Do you mean that when sharing variables, we do not need to use "locking mechanisms" and volatile variables? Or do you mean that we still need to do those things?
– Pacerier
Jun 18 '15 at...