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C# Object Pooling Pattern implementation
Does anyone have a good resource on implementing a shared object pool strategy for a limited resource in vein of Sql connection pooling? (ie would be implemented fully that it is thread safe).
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Are soft deletes a good idea? [duplicate]
...om COUNT(*) queries, which might take even longer to discover (I worked on one project where this had been happening for years; not many records were ever "deleted", so the totals were close to what was expected and no one noticed).
Finally, a soft delete will work on a table with artificial keys, ...
How Does Modulus Divison Work
...ake this the wrong way, but your examples do not clear anything up for someone that has absolutely no clue what's going on with modulous divison. You left out very important steps that explain where that remainder comes from. Marcin M.'s answer below explained the process better. Please consider ...
Elegant ways to support equivalence (“equality”) in Python classes
... does not imply that x!=y is false. Accordingly, when
defining __eq__(), one should also define __ne__() so that the
operators will behave as expected.
def __ne__(self, other):
"""Overrides the default implementation (unnecessary in Python 3)"""
return not self.__eq__(other)
n1 == n2...
Regex (grep) for multi-line search needed [duplicate]
...character. That is, grep knows where end of line is, but sees the input as one big line.
-o print only matching. Because we're using -z, the whole file is like a single big line, so if there is a match, the entire file would be printed; this way it won't do that.
In regexp:
(?s) activate PCRE_DOT...
Find a Git branch containing changes to a given file
I have 57 local branches. I know I made a change to a certain file in one of them, but I'm not sure which one. Is there some kind of command I can run to find which branches contain changes to a certain file?
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Difference between a theta join, equijoin and natural join
...gebra when it comes to theta joins, equijoins and natural joins. Could someone please help me better understand it? If I use the = sign on a theta join is it exactly the same as just using a natural join?
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Python loop that also accesses previous and next values
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This should do the trick.
foo = somevalue
previous = next_ = None
l = len(objects)
for index, obj in enumerate(objects):
if obj == foo:
if index > 0:
previous = objects[index - 1]
if index < (l - 1):
next_ = objects[index + 1]
Here's t...
Best way to do multi-row insert in Oracle?
...
One disadvantage with this is we cant use a sequnce.nextval as it is prohibited in unionof select. Instead we can go with INSERT ALL.
– sql_dummy
May 8 '17 at 2:41
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How to get the value from the GET parameters?
...th; i++) {
var pair = vars[i].split("=");
var key = decodeURIComponent(pair[0]);
var value = decodeURIComponent(pair[1]);
// If first entry with this name
if (typeof query_string[key] === "undefined") {
query_string[key] = decodeURIComponent(value);
// If secon...