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Byte order mark screws up file reading in Java
...ets read along with the rest of the first line, thus causing problems with string compares.
9 Answers
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Difference between VARCHAR and TEXT in MySQL [duplicate]
...size)
takes 2 + c bytes of disk space, where c is the length of the stored string.
cannot be (fully) part of an index. One would need to specify a prefix length.
VARCHAR(M)
variable max size of M characters
M needs to be between 1 and 65535
takes 1 + c bytes (for M ≤ 255) or 2 + c (for 256 ≤...
How do I increase the RAM and set up host-only networking in Vagrant?
...nage-modifyvm
The vagrant documentation has the section on how to change IP address:
Vagrant::Config.run do |config|
config.vm.network :hostonly, "192.168.50.4"
end
Also you can restructure the configuration like this, ending is do with end without nesting it.
This is simpler.
config.vm.defi...
关于php的socket初探 - PHP - 清泛IT论坛，有思想、有深度
...明，都是将socket称作"套接字"，也就是对底层tcp/ip的一种封装，所以要想真正理解socket的原理，就得去深入理解tcp/ip实现网络通信的机制，这属于计算机网络这块的东西，与实际的编程没有太大的关联，这里就不深入说明...
How to RSYNC a single file?
...e:
rsync -avz --progress /var/www/public_html/.htaccess root@<remote-ip>:/var/www/public_html/
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Hash Map in Python
...text, is dict(key1=value1, key2=value2, ...) but that requires the keys to strings which are also valid Python identifiers (and internally, this also creates a dictionary).
– user395760
Jan 2 '12 at 17:31
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Remove characters from NSString?
I want to remove the spaces, so the new string would be "ABCDEFG".
6 Answers
6
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How can I use UUIDs in SQLAlchemy?
...ve storing as binary(16 bytes) should end up being more efficient than the string representation(36 bytes?), And there seems to be some indication that indexing 16 byte blocks should be more efficient in mysql than strings. I wouldn't expect it to be worse anyway.
One disadvantage I've found is tha...
What is the purpose of fork()?
... child process to complete
waitpid(child_process_id, ...); // omitted extra args for brevity
// child process finished!
} else {
// Fork returns 0 in the child process. Child executes this.
// new argv array for the child process
const char *argv[] = {"arg1", "arg2", "arg3", ...
Scraping html tables into R data frames using the XML package
... I get an error "Scripts should use an informative User-Agent string with contact information, or they may be IP-blocked without notice." [2] " Is there a way round this to implement this method?
– pssguy
Jan 17 '12 at 20:59
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