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How to use double or single brackets, parentheses, curly braces
...ime for ((i=0; i<10000000; i++)); do [[ "$i" = 1000 ]]; done
real 0m24.548s
user 0m24.337s
sys 0m0.036s
$ time for ((i=0; i<10000000; i++)); do [ "$i" = 1000 ]; done
real 0m33.478s
user 0m33.478s
sys 0m0.000s
The braces, in addition to delimiting a variable name are used for pa...
Ways to implement data versioning in MongoDB
...{
_id : "id of address book record",
changes : {
1234567 : { "city" : "Omaha", "state" : "Nebraska" },
1234568 : { "city" : "Kansas City", "state" : "Missouri" }
}
}
To make my life really easy, I would make this part of my DataObjects (Entit...
WebService Client Generation Error with JDK8
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23 Answers
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Minimal web server using netcat
...
Try this:
while true ; do nc -l -p 1500 -c 'echo -e "HTTP/1.1 200 OK\n\n $(date)"'; done
The -cmakes netcat execute the given command in a shell, so you can use echo. If you don't need echo, use -e. For further information on this, try man nc. Note, that when using echo there is no wa...
rgdal package installation
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129
I f you look at the package page on CRAN, you will see the following :
SystemRequirements: ...
techniques for obscuring sensitive strings in C++
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42
Basically, anyone with access to your program and a debugger can and will find the key in the ap...
“git diff” does nothing
...onfig file. This was installed via MacPorts and is the lates version (1.7.2.2).
5 Answers
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Does MongoDB's $in clause guarantee order
...r documents with an array that is going to be passed in to the $in as [ 4, 2, 8 ].
Approach using Aggregate
var list = [ 4, 2, 8 ];
db.collection.aggregate([
// Match the selected documents by "_id"
{ "$match": {
"_id": { "$in": [ 4, 2, 8 ] },
},
// Project a "weight...
How do I split a string with multiple separators in javascript?
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22 Answers
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Use of .apply() with 'new' operator. Is this possible?
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