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How to get image height and width using java?
... quick as only image size is read from the file and not the whole image. I tested it and there is no comparison to ImageIO.read performance. I hope someone will find this useful.
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Git stash uncached: how to put away all unstaged changes?
...m/a/34681302/292408) is the correct one, I recommend checking it out.
I tested my answer again today (31/1/2020) against git version 2.24.0, and I still believe that it's correct, I added a small note above about the untracked files.
If you think it's not working please also mention your git vers...
How do I analyze a program's core dump file with GDB when it has command-line parameters?
... -s core can be used to dump memory in bulk
Now for the full educational test setup:
main.c
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int myfunc(int i) {
*(int*)(NULL) = i; /* line 7 */
return i - 1;
}
int main(int argc, char...
Check a collection size with JSTL
...
<c:if test="${companies.size() > 0}">
</c:if>
This syntax works only in EL 2.2 or newer (Servlet 3.0 / JSP 2.2 or newer). If you're facing a XML parsing error because you're using JSPX or Facelets instead of JSP, then...
JavaScript variables declare outside or inside loop?
...
I just did a simple test in Chrome. Try the fiddle in your browser and see the results
var count = 100000000;
var a = 0;
console.log(new Date());
for (var i=0; i<count; i++) {
a = a + 1
}
console.log(new Date())...
Versioning SQL Server database
...s script after each upgrade to the production DB.
A caveat: My automated tests run against a schema-correct but empty database, so this advice will not perfectly suit your needs.
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How to apply a Git patch to a file with a different name and path?
I have two repositories. In one, I make changes to file ./hello.test . I commit the changes and create a patch from that commit with git format-patch -1 HEAD . Now, I have a second repository that contains a file that has the same contents as hello.test but is placed in a different directory under...
Canary release strategy vs. Blue/Green
...eleasing is simpler and faster.
You can do a blue-green release if you've tested the new version in a testing environment and are very certain that the new version will function correctly in production. Always using feature toggles is a good way to increase your confidence in a new version, since t...
Can Retrofit with OKHttp use cache data when offline
...
The answer is YES, based on the above answers, I started writing unit tests to verify all possible use cases :
Use cache when offline
Use cached response first until expired, then network
Use network first then cache for some requests
Do not store in cache for some responses
I built a smal...
Delete all files in directory (but not directory) - one liner solution
...iles from ABC (sub-directories are untouched):
Arrays.stream(new File("C:/test/ABC/").listFiles()).forEach(File::delete);
This deletes only files from ABC (and sub-directories):
Files.walk(Paths.get("C:/test/ABC/"))
.filter(Files::isRegularFile)
.map(Path::toFil...