大约有 47,000 项符合查询结果（耗时：0.0520秒） [XML]
What is SQL injection? [duplicate]
...
SQL injection happens when you interpolate some content into a SQL query string, and the result modifies the syntax of your query in ways you didn't intend.
It doesn't have to be malicious, it can be an accident. But accidental SQL injection is more likely to result in an error than in a vulnera...
Why are quaternions used for rotations?
... because they can do more than rotations. But in the case of rotations the extra components are determined in terms of the others.
– JMP
Jan 18 '12 at 23:45
2
...
C# code to validate email address
What is the most elegant code to validate that a string is a valid email address?
43 Answers
...
Difference between clustered and nonclustered index [duplicate]
... every row in your table. This can be anything, really - an INT, a GUID, a string - pick what makes most sense for your scenario.
2) the clustering key (the column or columns that define the "clustered index" on the table) - this is a physical storage-related thing, and here, a small, stable, ever-...
Plot two graphs in same plot in R
...es(y=y2), colour="green") # second layer
Here + operator is used to add extra layers to basic object.
With ggplot you have access to graphical object on every stage of plotting. Say, usual step-by-step setup can look like this:
g <- ggplot(df, aes(x))
g <- g + geom_line(aes(y=y1), colour=...
Python Requests and persistent sessions
... loginData,
loginTestUrl,
loginTestString,
sessionFileAppendix = '_session.dat',
maxSessionTimeSeconds = 30 * 60,
proxies = None,
userAgent = 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:40.0) Geck...
Validating with an XML schema in Python
...bjectify
from lxml.etree import XMLSyntaxError
def xml_validator(some_xml_string, xsd_file='/path/to/my_schema_file.xsd'):
try:
schema = etree.XMLSchema(file=xsd_file)
parser = objectify.makeparser(schema=schema)
objectify.fromstring(some_xml_string, parser)
prin...
How to make an AJAX call without jQuery?
...be more convenient than a 'simple' callback? Is this convenience worth the extra effort to transpile it for old browser support?
– lennyklb
Apr 24 '17 at 12:13
...
Threading in a PyQt application: Use Qt threads or Python threads?
... (although the caveat above still applies.)
Non-blocking I/O
Threads add extraordinarily complexity to your application. Especially when dealing with the already complex interaction between the Python interpreter and compiled module code. While many find event-based programming difficult to follow...
Using Vim's tabs like buffers
...im -p however be aware that only up to 10 tabs will be display by default. Extra files are loaded into buffers, but not displayed in their own tab.
– IanB
Oct 22 '14 at 23:37
...