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how to check redis instance version?
...t can be run even when the server is down (e.g. in a Jenkins pipeline when testing a Redis container), while redis-cli info <subinfo> will succeed only in a complete working setup, with redis-server running and responsive and with open network connectivity between redis-cli and redis-server
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Different floating point result with optimization enabled - compiler bug?
...g, should I always turn on -ffloat-store option? Because the g++ version I tested is shipped with CentOS/Redhat 5 and CentOS/Redhat 6. I compiled many my programs under these platforms, I am worry about that will cause unexpected bugs inside my programs.
– Bear
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What is the difference between exit and return? [duplicate]
...hat is difference between return and exit statement in C programming when called from anywhere in a C program?
4 Answers
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UIButton Image + Text IOS
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I see very complicated answers, all of them using code. However, if you are using Interface Builder, there is a very easy way to do this:
Select the button and set a title and an image. Note that if you set the background instead of the image then the ima...
Difference between reduce and foldLeft/fold in functional programming (particularly Scala and Scala
...t is both commutative and associative. This means the operation can be parallelized.
This distinction is very important for Big Data / MPP / distributed computing, and the entire reason why reduce even exists. The collection can be chopped up and the reduce can operate on each chunk, then the red...
项目管理实践【五】自动编译和发布网站【Using Visual Studio with Source ...
...@163.com</FromAddress>
<ToAddress>zttc@163.com</ToAddress>
<MailPassword>testmail</MailPassword>
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
<DebugSymbols>true</DebugSymbols>
<OutputPath>.\Debug</OutputPath>
<EnableUpdateable>true</EnableUpd...
Underscore: sortBy() based on multiple attributes
... said, that's pretty hacky. To do this properly you'd probably want to actually use the core JavaScript sort method:
patients.sort(function(x, y) {
var roomX = x[0].roomNumber;
var roomY = y[0].roomNumber;
if (roomX !== roomY) {
return compare(roomX, roomY);
}
return compare(x[0].name...
How do I get the full path to a Perl script that is executing?
...me of the script during execution. I discovered that depending on how you call the script $0 varies and sometimes contains the fullpath+filename and sometimes just filename . Because the working directory can vary as well I can't think of a way to reliably get the fullpath+filename of the scr...
How do I loop through or enumerate a JavaScript object?
...uilt-in key-value pairs that have meta-information. When you loop through all the key-value pairs for an object you're looping through them too. hasOwnPropery() filters these out.
– danieltalsky
Jan 27 '12 at 15:56
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nginx server_name wildcard or catch-all
... is an admin console on admin.domain.com . These work great. Now I'd like all other domain requests to go to a single index.php - I have loads of domains and subdomains and it's impractical to list them all in an nginx config.
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