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How to see indexes for a database or table in MySQL?
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edited Mar 6 '11 at 21:11
answered Mar 6 '11 at 20:59
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connecting to MySQL from the command line
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6 Answers
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Speed up the loop operation in R
...es[i] <- i
if (i > 1) {
if ((temp[i,6] == temp[i-1,6]) & (temp[i,3] == temp[i-1,3])) {
res[i] <- temp[i,9] + res[i-1]
} else {
res[i] <- temp[i,9]
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How to get the number of characters in a std::string?
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edited Aug 31 '16 at 21:31
Ian
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answered May...
Visual Studio TFS shows unchanged files in the list of pending changes
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Javascript swap array elements
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list[x] = b;
Edit hijacking top answer 10 years later with a lot of ES6 adoption under our belts:
Given the array arr = [1,2,3,4], you can swap values in one line now like so:
[arr[0], arr[1]] = [arr[1], arr[0]];
This would produce the array [2,1,3,4]. This is destructuring assignment.
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JavaScript “new Array(n)” and “Array.prototype.map” weirdness
I've observed this in Firefox-3.5.7/Firebug-1.5.3 and Firefox-3.6.16/Firebug-1.6.2
14 Answers
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Where can I find the Java SDK in Linux after installing it?
... of the java command. On the OpenSUSE system I'm on now it returns /usr/lib64/jvm/java-1.6.0-openjdk-1.6.0/jre/bin/java (but this is not a system which uses apt-get).
On Ubuntu, it looks like it is in /usr/lib/jvm/java-6-openjdk/ for OpenJDK, and in some other subdirectory of /usr/lib/jvm/ for Su...
HTML entity for the middle dot
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edited Mar 15 '16 at 3:44
Chris Martin
27.6k44 gold badges6464 silver badges124124 bronze badges
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