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Choosing the best concurrency list in Java [closed]
...ol has a fixed number of threads. These threads need to write and read from a shared list frequently.
6 Answers
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Django template tag to truncate text
...at add "..." to the end of (last word of) the (truncated) string as well:
from django import template
register = template.Library()
@register.filter("truncate_chars")
def truncate_chars(value, max_length):
if len(value) > max_length:
truncd_val = value[:max_length]
if not le...
Why is Java's boolean primitive size not defined?
...2 bits, and there are different opcodes to load and store primitive values from an array. Boolean and byte values both use the baload and bastore opcodes, which implies that boolean arrays take 1 byte per element.
As far as in-memory object layout goes, this is covered under the "private implementa...
What is the difference between ? and Object in Java generics?
...ap<String, Object>. Say you want to write a method that accepts maps from Strings to anything: If you would write
public void foobar(Map<String, Object> ms) {
...
}
you can't supply a HashMap<String, String>. If you write
public void foobar(Map<String, ?> ms) {
.....
How to recover stashed uncommitted changes
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git stash pop - Restore back to the saved state, but it deletes the stash from the temporary storage.
git stash apply - Restore back to the saved state and leaves the stash list for possible later reuse.
You can read in more detail about git stashes in this article.
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git-checkout older revision of a file under a new name
...ing tree’s root directory. This is most useful to address a blob or tree from a commit or tree that has the same tree structure as the working tree.
Note that <path> here is FULL path relative to the top directory of your project, i.e. the directory with .git/ directory. (Or to be m...
How best to include other scripts?
... source filenames, ${string%substring} strips shortest match of $substring from back of $string
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How to calculate the bounding box for a given lat/lng location?
...ludes all longitudes and the latitudes computed normally for the side away from the pole and at the pole on the side near the pole.
– Doug McClean
Apr 23 '10 at 21:48
1
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How to send cookies in a post request with the Python Requests library?
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The latest release of Requests will build CookieJars for you from simple dictionaries.
import requests
cookies = {'enwiki_session': '17ab96bd8ffbe8ca58a78657a918558'}
r = requests.post('http://wikipedia.org', cookies=cookies)
Enjoy :)
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Use grep --exclude/--include syntax to not grep through certain files
...s identical.
Note that the star is escaped with a backslash to prevent it from being expanded by the shell (quoting it, such as --include="*.{cpp,h}", would work just as well). Otherwise, if you had any files in the current working directory that matched the pattern, the command line would expand ...