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Is DateTime.Now the best way to measure a function's performance?
...rformance counter doesn't exist) Stopwatch is using DateTime.UtcNow + some extra processing. Because of that it's obvious that in that case DateTime.UtcNow is the best option (because other use it + some processing)
However, as it turns out, the counter almost always exists - see Explanation about ...
Difference between getDefaultSharedPreferences and getSharedPreferences
...me(context),
getDefaultSharedPreferencesMode());
}
private static String getDefaultSharedPreferencesName(Context context) {
return context.getPackageName() + "_preferences";
}
private static int getDefaultSharedPreferencesMode() {
return Context.MODE_PRIVATE;
}
...
How to hide first section header in UITableView (grouped style)
...{
if (section == 0)
return 1.0f;
return 32.0f;
}
- (NSString*) tableView:(UITableView *) tableView titleForHeaderInSection:(NSInteger)section
{
if (section == 0) {
return nil;
} else {
// return some string here ...
}
}
- (void) viewDidLoad
{
[su...
Any difference between First Class Function and High Order Function
... supported because functions are inferior to other value types like int or char, in the sense that they cannot be explicitly defined (by a function body) wherever you want.
– wlnirvana
Apr 27 '17 at 23:58
...
Distinct() with lambda?
... great answer!!! also, for all VB_Complainers about the yield + extra lib, foreach can be re-written as return source.Where(element => knownKeys.Add(keySelector(element)));
– denis morozov
Mar 4 '14 at 16:51
...
Should methods in a Java interface be declared with or without a public access modifier?
... be omitted in Java interfaces (in my opinion).
Since it does not add any extra information, it just draws attention away from the important stuff.
Most style-guides will recommend that you leave it out, but of course, the most important thing is to be consistent across your codebase, and especial...
How can I use inverse or negative wildcards when pattern matching in a unix/linux shell?
...s) <(ls *Music*)
comm is preferable over diff because it doesn't have extra cruft.
This returns all elements of set 1, ls, that are not also in set 2, ls *Music*. This requires both sets to be in sorted order to work properly. No problem for ls and glob expansion, but if you're using something...
Duplicate headers received from server
...e fine. My function to make a valid filename is below.
public static string MakeValidFileName(string name)
{
string invalidChars = Regex.Escape(new string(System.IO.Path.GetInvalidFileNameChars()));
string invalidReStr = string.Format(@"[{0}]+", invalidChars);
strin...
Finding sum of elements in Swift array
...o) { $0 + $1[keyPath: keyPath] } }
}
Usage:
struct Product {
let id: String
let price: Decimal
}
let products: [Product] = [.init(id: "abc", price: 21.9),
.init(id: "xyz", price: 19.7),
.init(id: "jkl", price: 2.9)
]
products.sum(\.pr...
How to fix the flickering in User controls
...nvenient for point and click but their light-weight alternative (drawing a string or an image) takes only a single line of code in your OnPaint() method.
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