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How do I use NSTimer?
...s the timer is called more than once and the instance variable hasn't been set to nil and the NSTimer instance has been deallocated, it will throw an exception).
Note also the point on Memory Management at the bottom of the article:
Because the run loop maintains the timer, from the perspective...
Why is MATLAB so fast in matrix multiplication?
I am making some benchmarks with CUDA, C++, C#, Java, and using MATLAB for verification and matrix generation. When I perform matrix multiplication with MATLAB, 2048x2048 and even bigger matrices are almost instantly multiplied.
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How to Right-align flex item?
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Here you go. Set justify-content: space-between on the flex container.
.main {
display: flex;
justify-content: space-between;
}
.a, .b, .c { background: #efefef; border: 1px solid #999; }
.b { text-align: center; }
...
What does it mean when a CSS rule is grayed out in Chrome's element inspector?
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Inheritance
Note: Chrome dev tools "style" panel will display a rule set, because one or more rules from the set are being applied to the currently selected DOM node.
I guess, for the sake of completeness, dev tools shows all the rules from that set, whether they are applied or not.
In the ca...
C# : 'is' keyword and checking for Not
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The way you have it is fine but you could create a set of extension methods to make "a more elegant way to check for the 'NOT' instance."
public static bool Is<T>(this object myObject)
{
return (myObject is T);
}
public static bool IsNot<T>(this object myObj...
release Selenium chromedriver.exe from memory
I set up a python code to run Selenium chromedriver.exe . At the end of the run I have browser.close() to close the instance. ( browser = webdriver.Chrome() ) I believe it should release chromedriver.exe from memory (I'm on Windows 7). However after each run there is one chromedriver.exe inst...
How to cast an object in Objective-C
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Remember, Objective-C is a superset of C, so typecasting works as it does in C:
myEditController = [[SelectionListViewController alloc] init];
((SelectionListViewController *)myEditController).list = listOfItems;
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module unsafe for SAFESEH image C++
...h I can choose SAFESEH:NO in the Advanced Options submenu under the linker settings, it will not stay chosen. It always reverts back to SAFESEH:YES.
– user382459
Apr 21 '16 at 22:17
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How to merge 2 JSON objects from 2 files using jq?
... editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
...
Bash variable scope
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This perfect answer upsets me so much and explains a really weird behaviour in our CI system.
– KayCee
Apr 6 '17 at 8:29
a...