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Why doesn't delete set the pointer to NULL?
... I think this could use some more explanation. I'm not even sure what he's saying...I suppose I'll have to come back at a later time when I can dedicate a couple hrs to researching this until I get it. Or, you could expound upon the answer to help us understand more quickly.
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How to deal with floating point number precision in JavaScript?
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From the Floating-Point Guide:
What can I do to avoid this problem?
That depends on what kind of
calculations you’re doing.
If you really need your results to add up exactly, especially when you
work with money: use a special decimal
d...
C# Lazy Loaded Automatic Properties
... @ctorx Lazy has nothing to do with the singleton pattern. It does exactly what you want it to do.
– user247702
Feb 20 '13 at 7:15
8
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jQuery.parseJSON throws “Invalid JSON” error due to escaped single quote in JSON
...uery fails to parse an otherwise valid JSON string. Here’s an example of what I mean ( done in Chrome’s console ):
7 An...
How to atomically delete keys matching a pattern using Redis
...edis-cli KEYS "prefix:*" | xargs redis-cli DEL
UPDATE
Ok, i understood. What about this way: store current additional incremental prefix and add it to all your keys. For example:
You have values like this:
prefix_prefix_actuall = 2
prefix:2:1 = 4
prefix:2:2 = 10
When you need to purge data, y...
Remove trailing newline from the elements of a string list
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You can use the same approach to do whatever it is with the 0 values at the beginning of the list, too. Although I can't really imagine what it is you're trying to accomplish by putting them in the same result list...
– Karl Knechtel
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iOS 8 removed “minimal-ui” viewport property, are there other “soft fullscreen” solutions?
...al-ui, so at least my screen height is always the same and you always know what actual space you have for your app.
With the help of time, enough users will have more room.
EDIT
How I do it
This is a little simplified, for demo purpose, but should work for you. Assuming you have a main container
ht...
How to determine equality for two JavaScript objects?
... different from others simply because it references a different function.
What about an object that has one of its existing prototype methods overridden by another function? Could it still be considered equal to another instance that it otherwise identical? That question can only be answered in eac...
Cloning a MySQL database on the same MySql instance
... or to another DB server. There are lots of options available to customize what is actually copied.
So, to answer the OP’s question:
mysqldbcopy \
--source=root:your_password@localhost \
--destination=root:your_password@localhost \
sitedb1:sitedb2
...
Unique BooleanField value in Django?
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Whenever I've needed to accomplish this task, what I've done is override the save method for the model and have it check if any other model has the flag already set (and turn it off).
class Character(models.Model):
name = models.CharField(max_length=255)
is_the_...