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HashSet versus Dictionary w.r.t searching time to find if an item exists
...estion as the OP. I already have a dictionary i'm using for other reasons, and wanted to know if i benefit from changing to a Hashset instead of using ContainsKey. Looks like the answer is no since both are so fast.
– FistOfFury
Sep 12 '12 at 19:15
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is of a type that is invalid for use as a key column in an index
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A unique constraint can't be over 8000 bytes per row and will only use the first 900 bytes even then so the safest maximum size for your keys would be:
create table [misc_info]
(
[id] INTEGER PRIMARY KEY IDENTITY NOT NULL,
[key] nvarchar(450) UNIQUE NOT NULL,
[v...
How to shift a column in Pandas DataFrame
I would like to shift a column in a Pandas DataFrame , but I haven't been able to find a method to do it from the documentation without rewriting the whole DF. Does anyone know how to do it?
DataFrame:
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Replacing spaces with underscores in JavaScript?
...ou have an aversion to REs
Edit: John Resig said:
If you're searching and replacing
through a string with a static search
and a static replace it's faster to
perform the action with
.split("match").join("replace") -
which seems counter-intuitive but it
manages to work that way in mo...
Creating a Radial Menu in CSS
...
Almost 3 years later, I finally made the time to revisit this and post an improved version. You can still view the original answer at the end for reference.
While SVG may be the better choice, especially today, my goal with this was to keep it just HTML and CSS, no JS, no SVG, no image...
Intersection of two lists in Bash
...und in two lists. To simplify, let's use ls as an example. Imagine "one" and "two" are directories.
6 Answers
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List tables in a PostgreSQL schema
...nslated to the regular-expression notation .*, ? which is translated to ., and $ which is matched literally. You can emulate these pattern characters at need by writing ? for ., (R+|) for R*, or (R|) for R?. $ is not needed as a regular-expression character since the pattern must match the whole nam...
How to extract public key using OpenSSL?
The following command generates a file which contains both public and private key:
5 Answers
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Visual Studio Immediate window: how to see more than the first 100 items
... this is way late. However, If you add your object to the watch window. Expand the properties, where all are displayed. Then Ctrl-A and Copy. You can then paste in excel to get an organized list of properties and their values.
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Error during SSL Handshake with remote server
I have Apache2 (listening on 443) and a web app running on Tomcat7 (listening on 8443) on Ubuntu .
3 Answers
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