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In STL maps, is it better to use map::insert than []?
...ue)) should be map.insert(MyMap::value_type(key,value)). The type returned from make_pair does not match the type taken by insert and the current solution requires a conversion
– David Rodríguez - dribeas
Jan 4 '18 at 16:14
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How do you use “
...t useful in conjunction with closures to maintain state. Here's a section from a recent paper of mine:
A closure is a function written by another function. Closures are so called because they enclose the environment of the parent function, and can access all variables and parameters in that functi...
What is the difference between string primitives and String objects in JavaScript?
Taken from MDN
12 Answers
12
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Precision String Format Specifier In Swift
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My best solution so far, following from David's response:
import Foundation
extension Int {
func format(f: String) -> String {
return String(format: "%\(f)d", self)
}
}
extension Double {
func format(f: String) -> String {
...
Nodejs send file in response
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Here's an example program that will send myfile.mp3 by streaming it from disk (that is, it doesn't read the whole file into memory before sending the file). The server listens on port 2000.
[Update] As mentioned by @Aftershock in the comments, util.pump is gone and was replaced with a method...
How do I make a delay in Java?
.... Every time you run code and then sleep you will be drifting a little bit from running, say, every second. If this is an issue then don't use sleep.
Further, sleep isn't very flexible when it comes to control.
For running a task every second or at a one second delay I would strongly recommend a S...
Return multiple values to a method caller
... count) GetMultipleValues() { return (1, 2); } This example was taken from our Documentation topic example on this.
– Jeppe Stig Nielsen
Jan 5 '17 at 11:26
1
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Using Razor within JavaScript
...in a static .js file, and then it should get the data that it needs either from an Ajax call or by scanning data- attributes from the HTML. Besides making it possible to cache your JavaScript code, this also avoids issues with encoding, since Razor is designed to encode for HTML, but not JavaScript....
Convert RGBA PNG to RGB with PIL
... I found while building RGBA -> JPG + BG support for sorl thumbnails.
from PIL import Image
png = Image.open(object.logo.path)
png.load() # required for png.split()
background = Image.new("RGB", png.size, (255, 255, 255))
background.paste(png, mask=png.split()[3]) # 3 is the alpha channel
ba...
How to create an infinite loop in Windows batch file?
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And from cmd prompt?
– theonlygusti
Mar 13 '15 at 16:11
13
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