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What's the best name for a non-mutating “add” method on an immutable collection?
Sorry for the waffly title - if I could come up with a concise title, I wouldn't have to ask the question.
74 Answers
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Git branching strategy integated with testing/QA process
...ture branch is (automatically) deployed on our TEST environment with every commit for the developer to test.
When the developer is done with deployment and the feature is ready to be tested he merges the develop branch on the feature branch and deploys the feature branch that contains all the lates...
Curious null-coalescing operator custom implicit conversion behaviour
...hanks to everyone who contributed to analyzing this issue. It is clearly a compiler bug. It appears to only happen when there is a lifted conversion involving two nullable types on the left-hand side of the coalescing operator.
I have not yet identified where precisely things go wrong, but at some ...
Why is there a difference in checking null against a value in VB.NET and C#?
...de different assumptions about usage; in this case the semantics of a NULL comparison.
My personal preference is for the VB.NET semantics, which in essence gives NULL the semantics "I don't know yet". Then the comparison of 5 to "I don't know yet". is naturally "I don't know yet"; ie NULL. This has...
what is “strict mode” and how is it used?
... else.
For example, blah = 33; is valid JavaScript. It means you create a completely global variable blah.
But in strict mode its an error because you did not use the keyword "var" to declare the variable.
Most of the time you don't mean to create global variables in the middle of some arbitrary ...
techniques for obscuring sensitive strings in C++
...OR key2
If you create key1 with the same byte-length as key you can use (completely) random byte values and then compute key2:
key1[n] = crypto_grade_random_number(0..255)
key2[n] = key[n] XOR key1[n]
You can do this in your build environment, and then only store key1and key2 in your applicatio...
opengl: glFlush() vs. glFinish()
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Mind that these commands exist since the early days of OpenGL. glFlush ensures that previous OpenGL commands must complete in finite time (OpenGL 2.1 specs, page 245). If you draw directly to the front buffer, this shall ensure that the Open...
Javascript reduce on array of objects
...((a, b) => ({x: a.x + b.x}));
// -> {x: 7}
Explanation added from comments:
The return value of each iteration of [].reduce used as the a variable in the next iteration.
Iteration 1: a = {x:1}, b = {x:2}, {x: 3} assigned to a in Iteration 2
Iteration 2: a = {x:3}, b = {x:4}.
The probl...
JOIN queries vs multiple queries
... edited Jun 24 '11 at 20:28
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answered Jul 1 '09 at 2:27
Paolo BergantinoPaolo...
Break promise chain and call a function based on the step in the chain where it is broken (rejected)
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