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What is the best algorithm for overriding GetHashCode?
...he implementation given in Josh Bloch's fabulous Effective Java. It's fast and creates a pretty good hash which is unlikely to cause collisions. Pick two different prime numbers, e.g. 17 and 23, and do:
public override int GetHashCode()
{
unchecked // Overflow is fine, just wrap
{
i...
How can you find the height of text on an HTML canvas?
... on from ellisbben's answer, here is an enhanced version to get the ascent and descent from the baseline, i.e. same as tmAscent and tmDescent returned by Win32's GetTextMetric API. This is needed if you want to do a word-wrapped run of text with spans in different fonts/sizes.
The above image was...
Favorite Django Tips & Features?
...fferent locations. Use the following code in settings.py if your templates and static files are located within the Django project directory:
# settings.py
import os
PROJECT_DIR = os.path.dirname(__file__)
...
STATIC_DOC_ROOT = os.path.join(PROJECT_DIR, "static")
...
TEMPLATE_DIRS = (
os.path.jo...
Is there any good dynamic SQL builder library in Java? [closed]
...
Querydsl and jOOQ are two popular choices.
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What's the nearest substitute for a function pointer in Java?
...gFunction sf) {
int i = sf.func("my string");
// do whatever ...
}
And would be called like so:
ref.takingMethod(new StringFunction() {
public int func(String param) {
// body
}
});
EDIT: In Java 8, you could call it with a lambda expression:
ref.takingMethod(param -> ...
Remove Trailing Spaces and Update in Columns in SQL Server
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I am using SQL Management Studio v17.8.1 and while I get Intellisense for the TRIM function, when I execute it, it says it is not valid. I had to use the code above. Weird.
– DesertFoxAZ
Nov 2 '18 at 17:05
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Are there any smart cases of runtime code modification?
...ns on the fly has long been common in computer graphics. See e.g. Rob Pike and Bart Locanthi and John Reiser Hardware Software Tradeoffs for Bitmap Graphics on the Blit (1984) or this posting (2006) by Chris Lattner on Apple's use of LLVM for runtime code specialization in their OpenGL stack.
In som...
How to ensure a form field is submitted when it is disabled?
...b server? Isn't it the client that renders the page with the select field, and thus in case of conflict like that it would be the client that decides whether to send the value to the server or not?
– Ilari Kajaste
Jul 22 '11 at 15:38
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How to test which port MySQL is running on and whether it can be connected to?
I have installed MySQL and even logged in there as a user.
13 Answers
13
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Determine file creation date in Java
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Java nio has options to access creationTime and other meta-data as long as the filesystem provides it.
Check this link out
For example(Provided based on @ydaetskcoR's comment):
Path file = ...;
BasicFileAttributes attr = Files.readAttributes(file, BasicFileAttributes...