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If a folder does not exist, create it
...er control in my application. I want to save a file in a specified folder. Now I want, if this folder does not exist, to first create it, and then save my file to this folder. If the folder already exists, then just save the file in it.
...
When should I use the Visitor Design Pattern? [closed]
...
(Suppose it is a complex hierarchy with a well-established interface.)
Now we want to add a new operation to the hierarchy, namely we want each animal to make its sound. As far as the hierarchy is this simple, you can do it with straight polymorphism:
class Animal
{ public: virtual void makeSou...
Recursively add files by pattern
...ot already be tracked. If you want to limit yourself to files git already knows about, you could combine git-ls-files with a filter:
git ls-files [path] | grep '\.java$' | xargs git add
Git doesn't provide any fancy mechanisms for doing this itself, as it's basically a shell problem: how do you get...
Fixed position but relative to container
...
Short answer: no. (It is now possible with CSS transform. See the edit below)
Long answer: The problem with using "fixed" positioning is that it takes the element out of flow. thus it can't be re-positioned relative to its parent because it's as if ...
How to fast-forward a branch to head?
...
I don't know if the origin/master portion is required or if it sensibly defaults, but I found it useful to make an alias for fast forward so I wanted to make sure the upstream branch is used instead of hard coding it to origin/master:...
Multithreading: What is the point of more threads than cores?
...ou probably have several hundred threads all running on your machine right now. You won't ever get a situation where a thread runs without having time 'stolen' from it. (Well, you might if it's running real-time, if you're using a realtime OS or, even on Windows, use a real-time thread priority. ...
Using “Object.create” instead of “new”
...bject.create has any advantages over using new. On the contrary there are known problems with it. Sam Elsamman describes what happens when there are nested objects and Object.create(...) is used:
var Animal = {
traits: {},
}
var lion = Object.create(Animal);
lion.traits.legs = 4;
var bird = Obj...
How do I decompile a .NET EXE into readable C# source code?
...hanged their decision and still have a free version of .Net Reflector, but now I like ILSpy.
From the ILSpy website (https://github.com/icsharpcode/ILSpy/):
ILSpy is the open-source .NET assembly browser and decompiler.
ILSpy Features
Assembly browsing
IL Disassembly
Decompilation to C#
Suppor...
A proper wrapper for console.log with correct line number?
I'm now developing an application, and place a global isDebug switch. I would like to wrap console.log for more convenient usage.
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capturing self strongly in this block is likely to lead to a retain cycle
...h with unrecognized selector to a trash which is contains vcToGo_ variable now. Try to control it.
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