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Javascript object Vs JSON
... use JSON if the "thing" needs to be generated on the server, and use a js file if the "thing" is just served as-is. The other big differentiator is whether you need to include functions and/or dates, as JSON can't represent them, so you must resort to serving a JS file. If you're still unsure, feel...
Git submodule update
...thin a branch. This is called having a detached head — it means the HEAD file points directly to a commit, not to a symbolic reference.
The issue is that you generally don’t want to work in a detached head environment, because it’s easy to lose changes.
If you do an initial submodule updat...
How to deselect a selected UITableView cell?
...wift 4 and Swift 5:
Swift extension (e.g. in a UITableViewExtension.swift file):
import UIKit
extension UITableView {
func deselectSelectedRow(animated: Bool)
{
if let indexPathForSelectedRow = self.indexPathForSelectedRow {
self.deselectRow(at: indexPathForSelectedRo...
What is the best way to use a HashMap in C++?
...e once to retrieve results (e.g., counting the number of unique words in a file) chances are that an std::map will be just as fast, and quite possibly even faster (but, again, the computational complexity is different, so that can also depend on the number of unique words in the file).
1 Where t...
Embedding Base64 Images
...ommand line tool on Linux or Mac OS X: echo "data:image/jpeg;base64,"$(cat file.jpg | base64)
– cstroe
Sep 14 '18 at 4:42
add a comment
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Redirect to external URI from ASP.NET MVC controller
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Any thoughts on making this work with a local HTML file? Doesn't work: > return Redirect("C:/Users/Me/Documents/test.html");
– Steve Eggering
May 14 '18 at 19:19
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How do you set the max number of characters for an EditText in Android?
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@NiteshVerma in your res/layout xml file put next '<LinearLayout.... <EditText android:maxLength="20"'
– Shell Scott
Sep 19 '15 at 23:13
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Objective-C formatting string for boolean?
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Add this inline function to your .h file:
static inline NSString* NSStringFromBOOL(BOOL aBool) {
return aBool? @"YES" : @"NO";
}
Now you are ready to go...
NSLog(@"%@", NSStringFromBOOL(BOOL_VAL));
...
What does the caret (^) character mean?
I saw an answer to a question here that helps restore a deleted file in git.
8 Answers
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Performance optimization strategies of last resort [closed]
...o often on Stack Overflow.
P.S. It may be wondered why I didn't use a profiler. The answer is that almost every one of these "problems" was a function call site, which stack samples pinpoint. Profilers, even today, are just barely coming around to the idea that statements and call instructions are...