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How to prevent multiple instances of an Activity when it is launched with different Intents
... FLAG_ACTIVITY_NEW_TASK | FLAG_ACTIVITY_BROUGHT_TO_FRONT | FLAG_ACTIVITY_RESET_TASK_IF_NEEDED, and uses action "MAIN" and category "LAUNCHER".
If you would like to reproduce this in a test case, use these steps:
adb shell am start -f 0x10000000 -n com.testfairy.tests.regression.taskroot/.MainAct...
Localization of DisplayNameAttribute
...e = typeof(MyResources), Name = "UserName")]
public string UserName { get; set; }
This looks up a resource named UserName in your MyResources .resx file.
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Iterate through a HashMap [duplicate]
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Iterate through the entrySet() like so:
public static void printMap(Map mp) {
Iterator it = mp.entrySet().iterator();
while (it.hasNext()) {
Map.Entry pair = (Map.Entry)it.next();
System.out.println(pair.getKey() + " = " + pa...
How and when to use ‘async’ and ‘await’
...xternal resource. Since our code is waiting for a response, the system can set the running task off to the side and come back to it once it's finished. Meanwhile, it can do some other work on that thread.
In the example below, the first block is doing exactly that. It starts all the tasks immediate...
What characters are valid for JavaScript variable names?
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Could you please copy your example lines to this Rosetta Code page, which is currently lacking a JavaScript example?
– Walter Tross
Oct 30 '14 at 13:45
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Programmatically create a UIView with color gradient
...views added onto this UIView (such as a UILabel), you may want to consider setting the background color of those UIView’s to [UIColor clearColor] so the gradient view is presented instead of the background color for sub views. Using clearColor has a slight performance hit.
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How to make an HTTP POST web request
...for very old platforms there is a NuGet package.
using System.Net.Http;
Setup
It is recommended to instantiate one HttpClient for your application's lifetime and share it unless you have a specific reason not to.
private static readonly HttpClient client = new HttpClient();
See HttpClientFact...
Best algorithm for detecting cycles in a directed graph [closed]
...edge[0]].append(edge[1])
return adj
def dfs(G):
discovered = set()
finished = set()
for u in G.adj:
if u not in discovered and u not in finished:
discovered, finished = dfs_visit(G, u, discovered, finished)
def dfs_visit(G, u, discovered, finished):
d...
Bitwise operation and usage
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One typical usage:
| is used to set a certain bit to 1
& is used to test or clear a certain bit
Set a bit (where n is the bit number, and 0 is the least significant bit):
unsigned char a |= (1 << n);
Clear a bit:
unsigned char b &= ~(1 &...
Iterator Loop vs index loop [duplicate]
...like, for instance, you can iterate through all the values in a map, and a set(granted it is kindof like an array).
– Shipof123
Mar 14 '19 at 22:46
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