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How to “EXPIRE” the “HSET” child key in redis?
...
You can. Here is an example.
redis 127.0.0.1:6379> hset key f1 1
(integer) 1
redis 127.0.0.1:6379> hset key f2 2
(integer) 1
redis 127.0.0.1:6379> hvals key
1) "1"
2) "1"
3) "2"
redis 127.0.0.1:6379> expire key 10
(integer) 1
redis 127.0.0.1:6379> hvals key
1) "1"
2) "1"
3...
ruby on rails f.select options with custom attributes
... answered Feb 19 '11 at 20:55
Pan ThomakosPan Thomakos
31.9k88 gold badges8282 silver badges8484 bronze badges
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How to use the new affix plugin in twitter's bootstrap 2.1.0?
...e>
#content {
width: 800px;
height: 2000px;
background: #f5f5f5;
margin: 0 auto;
}
.menu {
background: #ccc;
width: 200px;
height: 400px;
float: left;
}
.affix {
position: fixed;
top: 20px;
left: auto;
right: auto;
}
</style>
&l...
Failed to execute 'btoa' on 'Window': The string to be encoded contains characters outside of the La
....createObjectURL(blob));
//Prints: blob:http://stackoverflow.com/7c18953f-f5f8-41d2-abf5-e9cbced9bc42
Don't forget to use the URL including the leading blob prefix. I used document.body again:
You can use this short URL as AJAX target, <script> source or <a> href location. You're re...
How do I tell if a regular file does not exist in Bash?
..."if any of 2 files does not exist". The following both work: if [ ! \( -f "f1" -a -f "f2" \) ] ; then echo MISSING; fi if [ ! -f "f1" ] || [ ! -f "f2" ] ; then echo MISSING; fi
– mivk
Feb 2 '12 at 15:41
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Convert dmesg timestamp to custom date format
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uptime=$(echo $uptime | cut -d "." -f1)
# run only if timestamps are enabled
if [ "Y" = "$(cat ...
Get just the filename from a path in a Bash script [duplicate]
...asy way to get the file name from a path:
echo "$PATH" | rev | cut -d"/" -f1 | rev
To remove the extension you can use, assuming the file name has only ONE dot (the extension dot):
cut -d"." -f1
share
|
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Is it smart to replace boost::thread and boost::mutex with c++11 equivalents?
...wnership of the int from the temporary std::unique_ptr to the parameter of f1 when the new thread is started. However, if you use boost::thread then it won't work, as it uses boost::bind internally, and std::unique_ptr cannot be copied. There is also a bug in the C++11 thread library provided with G...
What are C++ functors and their uses?
...e boost::bind to add state to this functor
boost::function<void ()> f1 = boost::bind(foo, 2);
f1();//no more argument, function argument stored in f1
//and this print "Foo 2" (:
//and normal function
boost::function<void ()> b1 = boost::bind(&Bar, 2);
b1();// print "Bar 2"
and mos...
What's the most efficient way to erase duplicates and sort a vector?
...ted (in Visual Studio implementation, at least).
Here are the 5 methods:
f1: Just using vector, sort + unique
sort( vec.begin(), vec.end() );
vec.erase( unique( vec.begin(), vec.end() ), vec.end() );
f2: Convert to set (using a constructor)
set<int> s( vec.begin(), vec.end() );
vec.assig...