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Is there any way to put malicious code into a regular expression?
...ng happens to be, because some of these can be detected during compilation time. Regex compilers that implement recursion usually have a built‐in recursion‐depth counter for checking non‐progression.
Russ Cox’s excellent 2007 paper on Regular Expression Matching Can Be Simple And Fast
(bu...
How can I get a JavaScript stack trace when I throw an exception?
... }
// String repeating prototype function.
if (!String.prototype.times) {
String.prototype.times = function () {
var s = this.toString(),
tempStr = "",
times = arguments[0];
if (!arguments.length)
return s;
...
How to make clang compile to llvm IR
...
Ahha. I was having a hard time finding anything in the docs about it. It is safe to assume that many flags in clang mirror gcc flag structure?
– meawoppl
Feb 28 '14 at 17:35
...
Python Requests and persistent sessions
... @SergeyNudnov Many thanks for your comment I wasted a lot of time trying to figure out why session does not handle cookies correctly. Changing domain from localhost to localhost.local solved the problem. Thanks again.
– Pulkownik
Jun 3 at 19:32
...
How to list active / open connections in Oracle?
..."Username", s.machine as "Machine", s.schemaname as "Schema name", s.logon_time as "Login time", s.program as "Program", s.osuser as "Os user", s.status as "Status", nvl(s.process, ' ') as "OS Process id"
from v$session s
where nvl(s.username, 'a') not like 'a' and status like 'ACTIVE'
order by 1,2
...
Which is the preferred way to concatenate a string in Python?
...ter of taste, the latter one is the most common. Here are timings with the timeit module:
a = a + b:
0.11338996887207031
a += b:
0.11040496826171875
However, those who recommend having lists and appending to them and then joining those lists, do so because appending a string to a list is presumab...
How to validate phone numbers using regex
...
The formatting code is going to be a waste of time if the numbers are allowed to come from outside the US.
– Daniel Earwicker
Jul 21 '09 at 12:13
26
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How do I add the contents of an iterable to a set?
...can test your beliefs quickly before going public:
>\python27\python -mtimeit -s"it=xrange(10000);a=set(xrange(100))" "a.update(it)"
1000 loops, best of 3: 294 usec per loop
>\python27\python -mtimeit -s"it=xrange(10000);a=set(xrange(100))" "for i in it:a.add(i)"
1000 loops, best of 3: 950 u...
source of historical stock data [closed]
...Is to extract historical data, although they are mainly an outfit for real-time feeds. But here there are quite a few options, some brokers even provide historical data downloads via their APIs, so just pick your poison.
BUT usually all of this data is not very clean, once you really start back te...
Is calculating an MD5 hash less CPU intensive than SHA family functions?
...ly limited by disk I/O).
md5sum of a large 4.6GB file took the exact same time than sha1sum of the same file, same goes with many small files (488 in the same directory). I ran the tests a dozen times and they were consitently getting the same results.
--
It would be very interesting to investiga...