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How to test if parameters exist in rails
...te:
Not there at all.
There but nil.
There but false.
There but an empty string.
as well. Hard to say without more details of your precise situation.
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Maven build failed: “Unable to locate the Javac Compiler in: jre or jdk issue”
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For me an extra step was needed: going to the properties of said project->java build path->libraries->select "JRE System Library", click Edit and select "Workspace default JRE"
– maayank
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Mechanisms for tracking DB schema changes [closed]
...d a pre-comment SVN hook that will disallow .sql files containing the mydb string, which is a sure sign that someone copy/pasted from phpMyAdmin without proper checking.
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Read and parse a Json File in C#
...{
using (StreamReader r = new StreamReader("file.json"))
{
string json = r.ReadToEnd();
List<Item> items = JsonConvert.DeserializeObject<List<Item>>(json);
}
}
public class Item
{
public int millis;
public string stamp;
public DateTime datet...
Query for documents where array size is greater than 1
...le. See the server-side processing page
for more information.
2.Create extra field NamesArrayLength, update it with names array length and then use in queries:
db.accommodations.find({"NamesArrayLength": {$gt: 1} });
It will be better solution, and will work much faster (you can create index ...
How do I create a namespace package in Python?
...ll on the PYTHONPATH the Python interpreter will find them for you with no extra effort on your part.
– Tendayi Mawushe
Nov 4 '09 at 19:00
5
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Writing a Python list of lists to a csv file
... With Python 3 - open('output.csv', 'w', newline=''). I get an extra line if I omit the newline parameter. docs.python.org/3/library/csv.html#csv.writer
– Spas
Jul 2 '15 at 15:50
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How should I log while using multiprocessing in Python?
... number of system calls (and impact on client performance) in exchange for extra latency in the aggregator proc.
– vladr
Oct 16 '13 at 19:31
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Do checkbox inputs only post data if they're checked?
...box field), and checking the checkbox, the post value is a comma separated string of the values, ie. something like "0,1"
– ʞᴉɯ
Oct 5 '16 at 11:16
1
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Referencing another schema in Mongoose
...small change to your post schema:
var postSchema = new Schema({
name: String,
postedBy: {type: mongoose.Schema.Types.ObjectId, ref: 'User'},
dateCreated: Date,
comments: [{body:"string", by: mongoose.Schema.Types.ObjectId}],
});
Then make your model:
var Post = mongoose.model('Po...