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What is the most accurate way to retrieve a user's correct IP address in PHP?
... if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE) !== false){
return $ip;
}
}
}
}
}
Your code seems to be pretty complete already, I cannot see any possible bugs in it (aside from...
Getting a map() to return a list in Python 3.x
...atin-1 is to do bulk conversions at the C layer: bytes(sequence_of_ints_in_range_0_to_256).decode('latin-1') which makes a str faster by avoiding Python function calls for each element in favor of a bulk conversion of all elements using only C level function calls. You can wrap the above in list if ...
Splitting a string into chunks of a certain size
...ble<string> Split(string str, int chunkSize)
{
return Enumerable.Range(0, str.Length / chunkSize)
.Select(i => str.Substring(i * chunkSize, chunkSize));
}
Please note that additional code might be required to gracefully handle edge cases (null or empty input string, chunkSize ...
Build a Basic Python Iterator
...__iter__ is invoked) violates the protocols.
– ShadowRanger
Feb 24 '18 at 1:16
2
For example, if ...
Generate an integer that is not among four billion given ones
...s that happen to fall outside the (signed or unsigned; your choice) 32-bit range.
If "integer" means mathematical integer: Read through the input once and keep track of the largest number length of the longest number you've ever seen. When you're done, output the maximum plus one a random number th...
python dataframe pandas drop column using int
...mn on i index like this:
df.drop(df.columns[i], axis=1)
It could work strange, if you have duplicate names in columns, so to do this you can rename column you want to delete column by new name. Or you can reassign DataFrame like this:
df = df.iloc[:, [j for j, c in enumerate(df.columns) if j != ...
Pythonic way to print list items
...isplay each content, I use:
mylist = ['foo', 'bar']
indexval = 0
for i in range(len(mylist)):
print(mylist[indexval])
indexval += 1
Example of using in a function:
def showAll(listname, startat):
indexval = startat
try:
for i in range(len(mylist)):
print(mylist[...
Android and setting alpha for (image) view alpha
...se View.setAlpha(float) whose XML counterpart is android:alpha. It takes a range of 0.0 to 1.0 instead of 0 to 255. Use it e.g. like
<ImageView android:alpha="0.4">
However, the latter in available only since API level 11.
...
How to change the name of a Django app?
...ault path is <app_label>/<model_name>_<suffix>.html)
Run raw SQL to fix migrations and content_types app (unfortunately, some raw SQL is unavoidable). You can not run this in a migration.
UPDATE django_migrations
SET app = 'catalogue'
WHERE app = 'shop';
UPDATE django_content...
Find the Smallest Integer Not in a List
...ce.
# Pass 1, move every value to the position of its value
for cursor in range(N):
target = array[cursor]
while target < N and target != array[target]:
new_target = array[target]
array[target] = target
target = new_target
# Pass 2, find first location where the ...