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How do I output coloured text to a Linux terminal?
...ours)
bold/bright off 21
underline off 24
inverse off 27
See the table on Wikipedia for other, less widely supported codes.
To determine whether your terminal supports colour sequences, read the value of the TERM environment variable. It should specify the particular terminal type used (e...
Numbering rows within groups in a data frame
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Use ave, ddply, dplyr or data.table:
df$num <- ave(df$val, df$cat, FUN = seq_along)
or:
library(plyr)
ddply(df, .(cat), mutate, id = seq_along(val))
or:
library(dplyr)
df %>% group_by(cat) %>% mutate(id = row_number())
or (the most memor...
Adding iOS UITableView HeaderView (not section header)
I want to add a table header (not section headers) like in the contacts app for example:
5 Answers
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How do I find a specific table in my EDMX model quickly?
I was wondering if anyone knows a quicker way to find a table in the EDMX model than just scrolling through the diagram and looking for the thing. Our database has around 50 tables in it and when I'm looking for a specific one it's just a chore to see where VS put the thing.
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Connection timeout for SQL server
...an you give example for this? I'm using EF6 an i have 3 million data in my table when i do some process program returns timeout error... note:i'm using indexing in table
– saulyasar
Nov 13 '15 at 12:26
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How to split a comma-separated value to columns
I have a table like this
36 Answers
36
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How to read a CSV file into a .NET Datatable
How can I load a CSV file into a System.Data.DataTable , creating the datatable based on the CSV file?
22 Answers
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MySQL join with where clause
I have two tables I want to join.
2 Answers
2
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What's wrong with foreign keys?
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you can get nice "on delete cascade" behavior, automatically cleaning up tables
knowing about the relationships between tables in the database helps the Optimizer plan your queries for most efficient execution, since it is able to get better estimates on join cardinality.
FKs give a pretty big hi...
Is there a Boolean data type in Microsoft SQL Server like there is in MySQL? [duplicate]
...rticularly user friendly. For instance, I'm displaying a datagrid of a sql table, and I'd like the users to be able to see/edit true or false, not 1 or 0.
– Charles Clayton
Jul 17 '15 at 16:04
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