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Why are Python lambdas useful? [closed]
... functional programming where you can pass functions to other functions to do stuff. Example:
mult3 = filter(lambda x: x % 3 == 0, [1, 2, 3, 4, 5, 6, 7, 8, 9])
sets mult3 to [3, 6, 9], those elements of the original list that are multiples of 3. This is shorter (and, one could argue, clearer) tha...
Is well formed without a ?
...le to submit form data to a server (Ajax aside).
– Ludovic Kuty
Sep 9 '13 at 8:07
5
@PhilipSmith ...
How to implement the activity stream in a social network
...as your needs change. Also, if you aren't using MySQL you might be able to do better index-wise.
For faster access to the most recent activities, I've been experimenting with Redis. Redis stores all of its data in-memory, so you can't put all of your activities in there, but you could store enoug...
How to retry after exception?
...
Do a while True inside your for loop, put your try code inside, and break from that while loop only when your code succeeds.
for i in range(0,100):
while True:
try:
# do stuff
except SomeSpeci...
Why is the Java main method static?
...
Implementing an interface does not solve the instantiation problem.
– Jacob Krall
Nov 15 '11 at 18:59
26
...
git switch branch without discarding local changes
...es, which you have not yet committed to master, to be on develop.
If you don't have a develop yet, the method is trivial:
$ git checkout -b develop
This creates a new develop branch starting from wherever you are
now. Now you can commit and the new stuff is all on develop.
You do have a develo...
mysqldump - Export structure only without autoincrement
...nly, without the auto increment values. mysqldump --no-data would almost do the job, but it keeps the auto_increment values. Is there any way to do it without using PHPMyAdmin (that I know it can do it)?
...
How do I terminate a thread in C++11?
I don't need to terminate the thread correctly, or make it respond to a "terminate" command. I am interested in terminating the thread forcefully using pure C++11.
...
Is it feasible to do (serious) web development in Lisp? [closed]
...starting point? Where can be found the proper resources (tools, libraries, documentation, best practices, examples, etc.) for a project of this nature?
...
How do I pick randomly from an array?
I want to know if there is a much cleaner way of doing this. Basically, I want to pick a random element from an array of variable length. Normally, I would do it like this:
...