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Add new field to every document in a MongoDB collection
...to add a new_field to all your collection, you have to use empty selector, and set multi flag to true (last param) to update all the documents
db.your_collection.update(
{},
{ $set: {"new_field": 1} },
false,
true
)
EDIT:
In the above example last 2 fields false, true specifies the upser...
How to clear a notification in Android
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I don't know why this isn't upvoted more and selected as the answer. This was the solution I was looking for. Thanks!
– loeschg
Jan 29 '13 at 23:48
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Getting started with Haskell
...ional programming paradigm in Haskell. I've done this by reading tutorials and watching screencasts, but nothing really seems to stick.
Now, in learning various imperative/OO languages (like C, Java, PHP), exercises have been a good way for me to go. But since I don't really know what Haskell is cap...
Best approach for designing F# libraries for use from both F# and C#
...alues (partially-applied functions, etc) with Func or Action, the rest are converted automatically. For example:
type A(arg) =
member x.Invoke(f: Func<_,_>) = f.Invoke(arg)
let a = A(1)
a.Invoke(fun i -> i + 1)
So it makes sense to use Func/Action where applicable. Does this eliminate...
How to stop C# console applications from closing automatically? [duplicate]
...compile (start debugging) your work with Ctrl+F5.
Try it. I always do it and the console shows me my results open on it. No additional code is needed.
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Using javadoc for Python documentation [closed]
I am currently beginning with Python and I have a strong PHP background and in PHP I have took the habit of using javadoc as a documentation template.
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Why do 64-bit DLLs go to System32 and 32-bit DLLs to SysWoW64 on 64-bit Windows?
... All to save people from adapting hard-coded "System32" to "System64" when converting to 64bit. Idiocy
– Armand
Sep 17 '14 at 0:18
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How to print a number with commas as thousands separators in JavaScript
...ay be used, such as en-US
var number = 1234567890; // Example number to be converted
⚠ Mind that javascript has a maximum integer value of 9007199254740991
toLocaleString
// default behaviour on a machine with a local that uses commas for numbers
number.toLocaleString(); // "1,234,567,890"
// W...
How to select the last record of a table in SQL?
...red Mar 4 '11 at 8:48
Adriaan StanderAdriaan Stander
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Use String.split() with multiple delimiters
I need to split a string base on delimiter - and . . Below are my desired output.
13 Answers
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