大约有 41,000 项符合查询结果（耗时：0.0524秒） [XML]
ERROR 2006 (HY000): MySQL server has gone away
... for me; nothing could be done via client-side only configuration/options, and I wasn't willing to go down a programmatic solution via PHP or other.
– Richard Sitze
Dec 16 '12 at 21:15
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Is there an auto increment in sqlite?
... you should try to avoid:
INSERT INTO people VALUES ("John", "Smith");
and use
INSERT INTO people (first_name, last_name) VALUES ("John", "Smith");
instead. The first version is very fragile — if you ever add, move, or delete columns in your table definition the INSERT will either fail o...
SQLAlchemy: Creating vs. Reusing a Session
...on_commit=False) anytime you needed a new Session, except that its verbose and redundant, and I wanted to stop the proliferation of small-scale "helpers" that each approached the issue of this redundancy in some new and more confusing way.
So sessionmaker() is just a tool to help you create Session...
count (non-blank) lines-of-code in bash
...
cat foo.c | sed '/^\s*$/d' | wc -l
And if you consider comments blank lines:
cat foo.pl | sed '/^\s*#/d;/^\s*$/d' | wc -l
Although, that's language dependent.
share
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Creating JSON on the fly with JObject
...looking for, completely forgot about dynamic.
– Karl Anderson
Aug 15 '13 at 16:16
I get 'Newtonsoft.Json.Linq.JObject'...
Base64 Java encode and decode a string [duplicate]
I want to encode a string into base64 and transfer it through a socket and decode it back.
6 Answers
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How to install Android SDK Build Tools on the command line?
I want to setup the Android dev environment from command line, and encounter the following issue:
19 Answers
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BaseException.message deprecated in Python 2.6
...- almost no coding needed
Just inherit your exception class from Exception and pass the message as the first parameter to the constructor
Example:
class MyException(Exception):
"""My documentation"""
try:
raise MyException('my detailed description')
except MyException as my:
print my # ...
Automatic creation date for Django model form objects?
What's the best way to set a creation date for an object automatically, and also a field that will record when the object was last updated?
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Why use argparse rather than optparse?
I noticed that the Python 2.7 documentation includes yet another command-line parsing module. In addition to getopt and optparse we now have argparse .
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