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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...
Animate change of view controllers without using navigation controller stack, subviews or modal cont
...lass I called TransitionController. You can find it at https://gist.github.com/1394947.
As an aside, I prefer the implementation in a separate class b/c it's easier to reuse. If you don't want that, you could simply implement the same logic directly in your app delegate eliminating the need for the...
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...
How to call asynchronous method from synchronous method in C#?
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Asynchronous programming does "grow" through the code base. It has been compared to a zombie virus. The best solution is to allow it to grow, but sometimes that's not possible.
I have written a few types in my Nito.AsyncEx library for dealing with a partially-asynchronous code base. There's no so...
Can a decorator of an instance method access the class?
... oh, actually it looks like inspect to the rescue stackoverflow.com/a/1911287/202168
– Anentropic
Apr 25 '14 at 10:57
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Break promise chain and call a function based on the step in the chain where it is broken (rejected)
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Autoincrement VersionCode with gradle extra properties
...at there are any number of possible solutions; here is one:
android {
compileSdkVersion 18
buildToolsVersion "18.1.0"
def versionPropsFile = file('version.properties')
if (versionPropsFile.canRead()) {
def Properties versionProps = new Properties()
versionProps.lo...