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Is leaked memory freed up when the program exits?
If I programmed — without knowing it — a memory leak, and the application terminates, is the leaked memory freed?
6 Ans...
Is it good practice to use java.lang.String.intern()?
...you're relying on the strings being internalized.
The second disadvantage if you decide to internalize strings is that the intern() method is relatively expensive. It has to manage the pool of unique strings so it does a fair bit of work (even if the string has already been internalized). So, be ca...
Map to String in Java
...
@wheeler toString() isn't declared in Map and if it were: Map has 21 implementing classes. Which of them should be preferred over the others when the implementation actually used is only known at runtime?
– Gerold Broser
Jul 17 at 2...
Updating and committing only a file's permissions using git version control
...
By default, git will update execute file permissions if you change them. It will not change or track any other permissions.
If you don't see any changes when modifying execute permission, you probably have a configuration in git which ignore file mode.
Look into your project,...
Can a for loop increment/decrement by more than one?
...ST; ADVANCE) {
BODY
}
Means the following:
INIT;
while (true) {
if (!TEST)
break;
BODY;
ADVANCE;
}
You can write almost any expression for INIT, TEST, ADVANCE, and BODY.
Do note that the ++ operators and variants are operators with side-effects (one should try to avoid ...
What does “@@ -1 +1 @@” mean in Git's diff output?
...
It's a unified diff hunk identifier. This is documented by GNU Diffutils.
The unified output format starts with a two-line header, which looks like this:
--- from-file from-file-modification-time
+++ to-file to-file-modification...
How to check for changes on remote (origin) Git repository?
...he remote branch in your repository to point to the latest version. For a diff against the remote:
git diff origin/master
Yes, you can use caret notation as well.
If you want to accept the remote changes:
git merge origin/master
...
How big should a UIBarButtonItem image be?
...um of about 28 points. (And the HIG should definitely be in your bookmarks if you're working on iOS apps!)
That would translate to images 25px square for older devices like iPad 2 / Mini, 50px square for most current devices like iPhone 8 or iPad, and 75px square for Retina HD devices (the iPhone 6...
How to see which flags -march=native will activate?
...formation, of which the methods both elias and 42n4 below have listed. Specifically, on gcc 4.9.2 on a Phenom, the output includes these: --param l1-cache-size=64 --param l1-cache-line-size=64 --param l2-cache-size=512
– Daniel Santos
Jan 29 '15 at 0:22
...
How do I execute a stored procedure once for each row returned by query?
...ter than manual while-loops; more details in this SO question
ADDENDUM 2: if you will be processing more than just a few records, pull them into a temp table first and run the cursor over the temp table; this will prevent SQL from escalating into table-locks and speed up operation
ADDENDUM 3: and ...