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UPDATE multiple tables in MySQL using LEFT JOIN
I have two tables, and want to update fields in T1 for all rows in a LEFT JOIN.
5 Answers
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How would you implement an LRU cache in Java?
...y at the back of the iteration order regardless of whether that entry initially exists in the cache)
– Pacerier
Feb 23 '12 at 18:26
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UnicodeDecodeError: 'ascii' codec can't decode byte 0xd1 in position 2: ordinal not in range(128)
...code, as per the job specs, but I am baffled. (And quite possibly doing it all wrong.)
10 Answers
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How to loop through a HashMap in JSP?
...ose <% %> things) are considered a poor practice. I recommend to install JSTL (just drop the JAR file in /WEB-INF/lib and declare the needed taglibs in top of JSP). It has a <c:forEach> tag which can iterate over among others Maps. Every iteration will give you a Map.Entry back which in ...
Detect network connection type on Android
...twork is connected and fast enough to meet your demands you have to handle all the network types returned by getSubType().
It took me an hour or two to research and write this class to do just exactly that, and I thought I would share it with others that might find it useful.
Here is a Gist of the...
Vim: apply settings on files in directory
How do I specify Vim settings for all files under the current directory?
11 Answers
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Read binary file as string in Ruby
...g it as a one-liner solution (like so many things on stackoverflow)? After all, it works, and the name for these functions were just an arbitrary choice of the ruby library designers. If only we had some language with synonyms... that still somehow knows exactly what we want in edge cases/ambiguous ...
Practical example where Tuple can be used in .Net 4.0?
...t's the point - it is more convenient not to make a custom class or struct all the time. It is an improvement like Action or Func... you can make this types yourself, but it's convenient that they exist in the framework.
sha...
Unique BooleanField value in Django?
... save method of the model and if you've set the boolean to True, make sure all others are set to False.
from django.db import transaction
class Character(models.Model):
name = models.CharField(max_length=255)
is_the_chosen_one = models.BooleanField()
def save(self, *args, **kwargs):
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C/C++ NaN constant (literal)?
... Indeed, it's an option if you need obfuscation but not portability. Personally, I prefer portability without obfuscation, so I won't suggest it myself.
– Mike Seymour
May 22 '13 at 12:26
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