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Is there any advantage of using map over unordered_map in case of trivial keys?
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415
Don't forget that map keeps its elements ordered. If you can't give that up, obviously you can...
How to reshape data from long to wide format
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answered May 4 '11 at 23:20
ChaseChase
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UPDATE and REPLACE part of a string
...work:
UPDATE dbo.xxx
SET Value = REPLACE(Value, '123\', '')
WHERE ID <=4
(I also added the \ in the replace as I assume you don't need that either)
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Swift: declare an empty dictionary
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edited Jul 24 '16 at 9:38
answered Jun 4 '14 at 9:15
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Two-dimensional array in Swift
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OR
let myVar = 18
arr[0][1] = myVar
Change sub array
arr[1] = [123, 456, 789]
OR
arr[0] += 234
OR
arr[0] += [345, 678]
If you had 3x2 array of 0(zeros) before these changes, now you have:
[
[0, 0, 234, 345, 678], // 5 elements!
[123, 456, 789],
[0, 0]
]
So be aware that sub...
Version vs build in Xcode
... app that I developed with Xcode 3 and recently started editing with Xcode 4. In the target summary I have the iOS application target form with fields: identifier, version, build, devices, and deployment target. The version field is blank and the build field is 3.4.0 (which matches the version of th...
Command copy exited with code 4 when building - Visual Studio restart solves it
...e (with 7 projects in it) I get the dreaded 'Command copy exited with code 4' error, in Visual Studio 2010 Premium ed.
27 A...
How do you split a list into evenly sized chunks?
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64 Answers
64
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Using Node.JS, how do I read a JSON file into (server) memory?
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1248
Sync:
var fs = require('fs');
var obj = JSON.parse(fs.readFileSync('file', 'utf8'));
Async:
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