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How can I sanitize user input with PHP?
...ss of escaping data for SQL - to prevent SQL injection - is very different from the process of escaping data for (X)HTML, to prevent XSS.
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What does it mean for a data structure to be “intrusive”?
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An intrusive data structure is one that requires help from the elements it intends to store in order to store them.
Let me reword that. When you put something into that data structure, that "something" becomes aware of the fact that it is in that data structure, in some way. Ad...
How can I maintain fragment state when added to the back stack?
...tten up a dummy activity that switches between two fragments. When you go from FragmentA to FragmentB, FragmentA gets added to the back stack. However, when I return to FragmentA (by pressing back), a totally new FragmentA is created and the state it was in is lost. I get the feeling I'm after th...
How can I force a hard reload in Chrome for Android
...rue) according to MDN (and this similar question) it forces page to reload from server.
You can execute this code in the browser by typing javascript:location.reload(true) in the address bar.
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Why doesn't GCC optimize a*a*a*a*a*a to (a*a*a)*(a*a*a)?
...ision results, double-precision suffices for a gold standard — the error from aaaaaa computed in double is *vastly smaller than the error of any of the single-precision computations.
– Stephen Canon
Sep 24 '13 at 22:47
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What is std::string::c_str() lifetime?
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The const char* returned from c_str() is only valid until the next non-const call to the std::string object. In this case you're fine because your std::string is still in scope for the lifetime of Foo and you aren't doing any other operations that wo...
Git: Show all of the various changes to a single line in a specified file over the entire git histor
...n iterates over each interesting commit, asking git grep to show the lines from that commit and file that contain the regex, prefaced with the commit hash.
EDIT: Changed to use -G instead of -S as suggested in comments.
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How to check if a string contains an element from a list in Python
...handle http://.../file.doc?foo and http://.../foo.doc/file.exe correctly.
from urlparse import urlparse
import os
path = urlparse(url_string).path
ext = os.path.splitext(path)[1]
if ext in extensionsToCheck:
print(url_string)
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Using lambda expressions for event handlers
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I see. So is there also no drawback from having these handlers inside of Page_Load versus having them outside of it?
– Christopher Garcia
Mar 17 '10 at 20:15
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Dictionaries and default values
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You can also use the defaultdict like so:
from collections import defaultdict
a = defaultdict(lambda: "default", key="some_value")
a["blabla"] => "default"
a["key"] => "some_value"
You can pass any ordinary function instead of lambda:
from collections import...