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Javascript regex returning true.. then false.. then true.. etc [duplicate]
... (with exec, test etc.) the first time, you get the first match in a given string. Call them again and you get the next match, and so on until you get no match and it resets to the start of the next string. You can also write regex.lastIndex= 0 to reset this state.
(This is of course an absolutely ...
Version number comparison in Python
...
Remove the uninteresting part of the string (trailing zeroes and dots), and then compare the lists of numbers.
import re
def mycmp(version1, version2):
def normalize(v):
return [int(x) for x in re.sub(r'(\.0+)*$','', v).split(".")]
return cmp(n...
What's the difference between the WebConfigurationManager and the ConfigurationManager?
...ger with Reflector then things are clear:
public static object GetSection(string sectionName)
{
...
return ConfigurationManager.GetSection(sectionName);
}
public static object GetSection(string sectionName, string path)
{
...
return HttpConfigurationSystem.GetSection(sectionName, p...
pandas GroupBy columns with NaN (missing) values
...l stumbles over this--another workaround is to convert via .astype(str) to string before grouping. That will conserve the NaN's.
df = pd.DataFrame({'a': ['1', '2', '3'], 'b': ['4', np.NaN, '6']})
df['b'] = df['b'].astype(str)
df.groupby(['b']).sum()
a
b
4 1
6 3
nan 2
...
Confused about __str__ on list in Python [duplicate]
...round, I understand that __str__ is something like a Python version of toString (while I do realize that Python is the older language).
...
What is the difference between os.path.basename() and os.path.dirname()?
...ile name: here, 'foo.bar', and os.path.dirname(file_name) returns an empty string: ''.
– jkdev
Nov 26 '18 at 20:47
...
Why does typeof NaN return 'number'?
...al) is true, return "undefined".
Let val be GetValue(val).
Return a String determined by Type(val) according to Table 20.
Table 20 — typeof Operator Results
==================================================================
| Type of val | ...
PHP exec() vs system() vs passthru()
...nkninja:
The system() Function
The system function in PHP takes a string argument with the command to
execute as well as any arguments you wish passed to that command. This
function executes the specified command, and dumps any resulting text
to the output stream (either the HTTP outp...
Sort a list by multiple attributes?
...t one ascending and the second one descending? (Assume both attributes are strings, so no hacks like adding - for integers)
– Martin Thoma
Aug 5 '13 at 11:03
...
jQuery UI datepicker change event not caught by KnockoutJS
...t);
//handle date data coming via json from Microsoft
if (String(value).indexOf('/Date(') == 0) {
value = new Date(parseInt(value.replace(/\/Date\((.*?)\)\//gi, "$1")));
}
var current = $el.datepicker("getDate");
if (value - current !== 0) {
...