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SQL Server IN vs. EXISTS Performance
...an overall large result set).
I believe the optimizer is smart enough to convert between "in" vs "exists" when there is a significant cost difference due to (1) and (2), otherwise it may just be used as a hint (e.g. exists to encourage use of an a seekable index on the right side).
Both forms c...
How can I remove a pytz timezone from a datetime object?
...you are using a library like arrow, then you can remove timezone by simply converting an arrow object to to a datetime object, then doing the same thing as the example above.
# <Arrow [2014-10-09T10:56:09.347444-07:00]>
arrowObj = arrow.get('2014-10-09T10:56:09.347444-07:00')
# datetime.date...
Generate fixed length Strings filled with whitespaces
...we can use the method java.lang.String.format(String, Object...) and use printf like format.
The format string "%1$15s" do the job. Where 1$ indicates the argument index, s indicates that the argument is a String and 15 represents the minimal width of the String.
Putting it all together: "%1$15s".
...
How can I get Git to follow symlinks?
...
$ git add src/main/path/ConvertSymlinkToDir fatal: 'src/main/path/ConvertSymlinkToDir' is beyond a symbolic link
– user1767316
Jul 21 '17 at 14:04
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How to get whole and decimal part of a number?
...
As a side, intval() or simple casting as (int) might be more performant than floor()
– Jason McCreary
Jul 8 '11 at 2:36
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What is the best way to give a C# auto-property an initial value?
...ince C# 6.0, you can specify initial value in-line. The syntax is:
public int X { get; set; } = x; // C# 6 or higher
DefaultValueAttribute is intended to be used by the VS designer (or any other consumer) to specify a default value, not an initial value. (Even if in designed object, initial value...
Pass Array Parameter in SqlCommand
...ar parameters = new string[items.Length];
var cmd = new SqlCommand();
for (int i = 0; i < items.Length; i++)
{
parameters[i] = string.Format("@Age{0}", i);
cmd.Parameters.AddWithValue(parameters[i], items[i]);
}
cmd.CommandText = string.Format("SELECT * from TableA WHERE Age IN ({0})", s...
Turn a string into a valid filename?
...code is the following.
def slugify(value):
"""
Normalizes string, converts to lowercase, removes non-alpha characters,
and converts spaces to hyphens.
"""
import unicodedata
value = unicodedata.normalize('NFKD', value).encode('ascii', 'ignore')
value = unicode(re.sub('[^...
Setting Short Value Java
...
In Java, integer literals are of type int by default. For some other types, you may suffix the literal with a case-insensitive letter like L, D, F to specify a long, double, or float, respectively. Note it is common practice to use up...
Find kth smallest element in a binary search tree in Optimum way
...he number of elements in the left subtree, to decide whether to do recurse into the left or right subtree.
Now, suppose we are at node T:
If k == num_elements(left subtree of T), then the answer we're looking for is the value in node T.
If k > num_elements(left subtree of T), then obviously we...