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gcc makefile error: “No rule to make target …”
...f. Lets consider an example.
My folder contents is:
$ ls -1
another_file
index.md
makefile
Whereas my makefile looks like
all: index.html
%.html: %.md wrong_path_to_another_file
@echo $@ $<
Although I do have index.md where it should be and there is no mistake in the name of it, the m...
Difference between VARCHAR and TEXT in MySQL [duplicate]
..., where c is the length of the stored string.
cannot be (fully) part of an index. One would need to specify a prefix length.
VARCHAR(M)
variable max size of M characters
M needs to be between 1 and 65535
takes 1 + c bytes (for M ≤ 255) or 2 + c (for 256 ≤ M ≤ 65535) bytes of disk space whe...
Naming convention for unique constraint
...K_Table_ReferencedTable , respectively). The IX_Table_Column naming for indexes is also fairly standard.
3 Answers
...
Specifying column name in a “references” migration
...
Don't I have to add any index?
– caarlos0
Dec 4 '12 at 1:33
1
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Modifying a subset of rows in a pandas dataframe
...
Use .loc for label based indexing:
df.loc[df.A==0, 'B'] = np.nan
The df.A==0 expression creates a boolean series that indexes the rows, 'B' selects the column. You can also use this to transform a subset of a column, e.g.:
df.loc[df.A==0, 'B'] = ...
Rails 3 migrations: Adding reference column?
...
remember to add the index with user:integer:index
– rickypai
Dec 1 '12 at 17:40
3
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Remove Identity from a column in a table
...able
Script the table to be created; rename everything e.g. 'MyTable2', 'MyIndex2', etc.
Remove the IDENTITY specification.
You should now have two "identical"-ish tables, one full, the other empty with no IDENTITY.
Run ALTER TABLE [Original] SWITCH TO [Original2]
Now your original table will be emp...
What is an example of the simplest possible Socket.io example?
...r updated small-small for the newer API.
Just because I feel nice today:
index.html
<!doctype html>
<html>
<head>
<script src='/socket.io/socket.io.js'></script>
<script>
var socket = io();
socket.on('welcome', funct...
How to remove an element from an array in Swift
...
can we filter only based on index ??
– shaqir saiyed
Mar 14 '19 at 7:47
...
Get only part of an Array in Java?
...e only a part of it. I know in Python you can do something like this array[index:] and it returns the array from the index. Is something like this possible in Java.
...