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Practical uses for AtomicInteger
...nd more readable than performing the same using synchronization.
A simple test:
public synchronized int incrementNotAtomic() {
return notAtomic++;
}
public void performTestNotAtomic() {
final long start = System.currentTimeMillis();
for (int i = 0 ; i < NUM ; i++) {
increme...
Numpy first occurrence of value greater than existing value
...t suspicious. argmax does not seem to stop at the first True. (This can be tested by creating boolean arrays with a single True at different positions.) The speed is probably explained by the fact that argmax does not need to create an output list.
– DrV
Oct 8 ...
Find the min/max element of an Array in JavaScript
...y work on strings. Your future colleague tries to get the alphabetically-latest string in an array with the now-well-documented native .max() method, but mysteriously gets NaN. Hours later, she finds this code, runs a git blame, and curses your name.
– Mark Amery
...
Google Espresso or Robotium [closed]
I have to use Automated UI test tool and I am confused between using Robotium vs Google Espresso.
2 Answers
...
What is uintptr_t data type
...add one very good use for uintptr_t (or even intptr_t) and that is writing testable embedded code.
I write mostly embedded code targeted at various arm and currently tensilica processors. These have various native bus width and the tensilica is actually a Harvard architecture with separate code and...
How to check whether a given string is valid JSON in Java
...atch the exception:
import org.json.*;
public boolean isJSONValid(String test) {
try {
new JSONObject(test);
} catch (JSONException ex) {
// edited, to include @Arthur's comment
// e.g. in case JSONArray is valid as well...
try {
new JSONArray(te...
Batch script: how to check for admin rights
... of which have their own security, usability, and portability issues.
Testing
I've independently confirmed that this works on:
Windows XP, x86
Windows XP, x64
Windows Vista, x86
Windows Vista, x64
Windows 7, x86
Windows 7, x64
Windows 8, x86
Windows 8, x64
Windows 10 v1909, x64
(see scre...
how do I check in bash whether a file was created more than x time ago?
...
Only for modification time
if test `find "text.txt" -mmin +120`
then
echo old enough
fi
You can use -cmin for change or -amin for access time. As others pointed I don’t think you can track creation time.
...
Difference in Months between two dates in JavaScript
... += d2.getMonth();
return months <= 0 ? 0 : months;
}
function test(d1, d2) {
var diff = monthDiff(d1, d2);
console.log(
d1.toISOString().substring(0, 10),
"to",
d2.toISOString().substring(0, 10),
":",
diff
);
}
test(
n...
Running PostgreSQL in memory only
...o run a small PostgreSQL database which runs in memory only, for each unit test I write. For instance:
8 Answers
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