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Is async HttpClient from .Net 4.5 a bad choice for intensive load applications?
...conclusion I reached was "Just because it implements Dispose, that doesn't mean its cheap to Dispose it".
– PhillipH
May 31 '16 at 11:19
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How to access a preexisting collection with Mongoose?
... following, either schema-mapped:
new Schema({ url: String, text: String, id: Number},
{ collection : 'question' }); // collection name
or model mapped:
mongoose.model('Question',
new Schema({ url: String, text: String, id: Number}),
'question'); ...
Print only?
...which I have verified to work.
@media print {
body * {
visibility: hidden;
}
#section-to-print, #section-to-print * {
visibility: visible;
}
#section-to-print {
position: absolute;
left: 0;
top: 0;
}
}
Alternative approaches aren't so good. Using display is tricky ...
How to check for an undefined or null variable in JavaScript?
...common idiom based on this fact:
value = obj.prop || defaultValue
which means "if obj has the property prop, assign it to value, otherwise assign the default value defautValue".
Some people consider this behavior confusing, arguing that it leads to hard-to-find errors and recommend using the in ...
Find the closest ancestor element that has a specific class
...n so in the end, you have the ancestor with that class or null.
Here's a fiddle, if anyone wants to improve it. It won't work on old browsers (i.e. IE); see this compatibility table for classList. parentElement is used here because parentNode would involve more work to make sure that the node is an...
foreach vs someList.ForEach(){}
...
I think he meant that the runtime engine could parallelize it automatically. Otherwise, both foreach and .ForEach can be parallelized by hand using a thread from the pool in each action delegate
– Isak Savo
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scp (secure copy) to ec2 instance without password
...n the wrong order. This works:
scp -i mykey.pem somefile.txt root@my.ec2.id.amazonaws.com:/
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psql: FATAL: Peer authentication failed for user “dev”
...TYPE DATABASE USER ADDRESS METHOD
local all all md5
peer means it will trust the identity (authenticity) of UNIX user. So not asking for a password.
md5 means it will always ask for a password, and validate it after hashing with MD5.
You can, of course, also create more specific ...
Best practice for embedding arbitrary JSON in the DOM?
... intended use is clear. It doesn't feel like a hack (e.g. as using CSS to hide your "carrier" element does). It's perfectly valid.
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Return rows in random order [duplicate]
...
SELECT * FROM table
ORDER BY NEWID()
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