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How to append text to a text file in C++?
...s created if it doesn't exist and also adds bit of error checks.
static void appendLineToFile(string filepath, string line)
{
std::ofstream file;
//can't enable exception now because of gcc bug that raises ios_base::failure with useless message
//file.exceptions(file.exceptions() | std:...
Preserving signatures of decorated functions
...odato: functools.wraps() already preserves signatures in Python 3.4+ (as said in the answer). Do you mean setting wrapper.__signature__ helps on earlier versions? (which versions have you tested?)
– jfs
Jan 5 '16 at 3:02
...
How to configure MongoDB Java driver MongoOptions for production use?
...ncern.NORMAL for this mode.
If you set w to 1 or higher the write is considered safe. Safe writes perform the write and follow it up by a request to the server to make sure the write succeeded or retrieve an error value if it did not (in other words, it sends a getLastError() command after you wri...
Zoom in on a point (using scale and translate)
...ved it:
var zoomIntensity = 0.2;
var canvas = document.getElementById("canvas");
var context = canvas.getContext("2d");
var width = 600;
var height = 200;
var scale = 1;
var originx = 0;
var originy = 0;
var visibleWidth = width;
var visibleHeight = height;
function draw(){
...
ReadOnlyCollection or IEnumerable for exposing member collections?
...ust return the collection directly. I generally try to be a bit more paranoid than that though.
Likewise, as you say: if you only need IEnumerable<T>, then why tie yourself to anything stronger?
Original answer
If you're using .NET 3.5, you can avoid making a copy and avoid the simple cast ...
what is the difference between ?:, ?! and ?= in regex?
...ing group and analyse each behaviour.
() capturing group - the regex inside the parenthesis must be matched and the match create a capturing group
(?:) non capturing group - the regex inside the parenthesis must be matched but doesn't not create the capturing group
(?=) positive look ahead - a...
Difference between __str__ and __repr__?
...ou always want to use repr() [or %r formatting character, equivalently] inside __repr__ implementation, or you’re defeating the goal of repr. You want to be able to differentiate MyClass(3) and MyClass("3").
The goal of __str__ is to be readable
Specifically, it is not intended to be unambiguous...
How to prevent moment.js from loading locales with webpack?
...locale directory is included.
The ContextReplacementPlugin allows to override the inferred information i.e. provide a new regular expression (to choose the languages you want to include).
Another approach is to ignore the require with the IgnorePlugin.
Here is an example:
var webpack = require("...
How do you create an asynchronous method in C#?
...
If you didn't want to use async/await inside your method, but still "decorate" it so as to be able to use the await keyword from outside, TaskCompletionSource.cs:
public static Task<T> RunAsync<T>(Func<T> function)...
Proper practice for subclassing UIView?
...er, it's fairly simple to use the loadView and related viewWill , viewDid methods, but when subclassing a UIView, the closest methosds I have are `awakeFromNib , drawRect , and layoutSubviews . (I'm thinking in terms of setup and teardown callbacks.) In my case, I'm setting up my frame and i...