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When to use enumerateObjectsUsingBlock vs. for
...mes down to personal preference. For me, the idiomatic and readable option wins. In this case, that is Fast Enumeration using for-in.
Benchmark:
NSMutableArray *arr = [NSMutableArray array];
for (int i = 0; i < 100; i++) {
arr[i] = [NSString stringWithFormat:@"%d", i];
}
int i;
__block NSUI...
Do browsers send “\r\n” or “\n” or does it depend on the browser?
...ne (such as a "Bio" for a user's profile) I always end up writing the following paranoid code:
2 Answers
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Type definition in object literal in TypeScript
....7
state.instance && state.instance.fun();
// Or the long winded way because the above just feels weird
if (state.instance) { state.instance.fun(); }
// Or the I came from C and can't check for nulls like they are booleans way
if (state.instance != null) { state.instanc...
How can I rotate an HTML 90 degrees?
...
Use following in your CSS
div {
-webkit-transform: rotate(90deg); /* Safari and Chrome */
-moz-transform: rotate(90deg); /* Firefox */
-ms-transform: rotate(90deg); /* IE 9 */
-o-transform: rotate(90deg); /*...
What is MyAssembly.XmlSerializers.dll generated for?
... I know this is an old response but in VS2015 Update 3 on a Winforms app targeting .NET 2.0 x86 when compiled on a Win10 Ent 64bit system then even when the setting "Generate serialization assembly" dropdown to "Off" then the *.XmlSerializers.dll is still generated. My app does refere...
Finding local IP addresses using Python's stdlib
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@Jason R. Coombs, use following code to retrieve list of IPv4 addresses that belong to the host machine: socket.gethostbyname_ex(socket.gethostname())[-1]
– Barmaley
May 15 '15 at 20:36
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How to convert URL parameters to a JavaScript object?
... requires you to actually convert it to object, you can implement the following function:
function paramsToObject(entries) {
let result = {}
for(let entry of entries) { // each 'entry' is a [key, value] tupple
const [key, value] = entry;
result[key] = value;
}
return result;
}
Bas...
Python syntax for “if a or b or c but not all of them”
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All great answers, but this wins for conciseness, with great short-circuiting. Thanks all!
– Chris Wilson
May 13 '13 at 12:46
38
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How to handle WndProc messages in WPF?
In Windows Forms, I'd just override WndProc , and start handling messages as they came in.
9 Answers
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How to detect modifier key states in WPF?
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I could not catch the windows key modifier using this method. (CTRL worked fine.) I was trying to catch WIN+RightArrow.
– ANeves thinks SE is evil
May 6 '14 at 19:15
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