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Get names of all keys in the collection
...ation with the new $objectToArray aggregation operator in version 3.4.4 to convert all top key-value pairs into document arrays, followed by $unwind and $group with $addToSet to get distinct keys across the entire collection. (Use $$ROOT for referencing the top level document.)
db.things.aggregate([...
How do I concatenate two text files in PowerShell?
...t would be
type file1.txt file2.txt file3.txt > files.txt
PowerShell converts the type command to Get-Content, which means you will get an error when using the type command in PowerShell because the Get-Content command requires a comma separating the files. The same command in PowerShell would...
Delete rows from a pandas DataFrame based on a conditional expression involving len(string) giving K
... copy of a slice from a DataFrame" warning.
– PlasmaBinturong
Mar 23 '19 at 16:38
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Operational Transformation library?
...-MobWrite - Real-time Synchronization and Collaboration Service: "MobWrite converts forms and web applications into collaborative environments. Create a simple single-user system, add one line of JavaScript, and instantly get a collaborative system." (Uses Google-Diff-Match-Patch.)
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Avoid passing null as the view root (need to resolve layout parameters on the inflated layout's root
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Instead of doing
convertView = infalInflater.inflate(R.layout.list_item, null);
do
convertView = infalInflater.inflate(R.layout.list_item, parent, false);
It will inflate it with the given parent, but won't attach it to the parent.
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Case-insensitive search
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Sorry how can you convert "best" into a variable in your first example? string.match(/best/i);
– Doug Molineux
Oct 23 '15 at 16:00
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Using braces with dynamic variable names in PHP
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Tom if you have existing array you can convert that array to object and use it like this:
$r = (object) $MyQueryResult;
echo $r->key;
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subtract two times in python
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It is possible to convert the timedelta object back to datetime ? I mean we have difference_delta .seconds(), is there any way to get back a datetime or time object ? Thx
– dejdej
Dec 11 '18 at 10:28
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Python TypeError: not enough arguments for format string
...', '{1}', '{2}', '{3}', '{4}', '{5}', '{6}'".format(softname, procversion, int(percent), exe, description, company, procurl)
This also fixes the error that you happened to have.
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SQLite add Primary Key
... is to create a new table with the correct requirements and copy your data into it, then drop the old table.
here is the official documentation about this: http://sqlite.org/faq.html#q11
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