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Table row and column number in jQuery
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You can use the Core/index function in a given context, for example you can check the index of the TD in it's parent TR to get the column number, and you can check the TR index on the Table, to get the row number:
$('td').click(function(){
var...
How do I check if a list is empty?
...st check if the input is empty, and you're using other NumPy features like indexing or math operations, it's probably more efficient (and certainly more common) to force the input to be a NumPy array. There are a few nice functions for doing this quickly — most importantly numpy.asarray. This t...
How to insert an item into an array at a specific index (JavaScript)?
...at you want is the splice function on the native array object.
arr.splice(index, 0, item); will insert item into arr at the specified index (deleting 0 items first, that is, it's just an insert).
In this example we will create an array and add an element to it into index 2:
var arr = [];
arr...
performing HTTP requests with cURL (using PROXY)
... when I run this command: curl -x, --proxy 122.72.2.200:80 mysite.com/test.php?id=1
– user873286
Feb 27 '12 at 22:52
63
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Is there a splice method for strings?
...is faster to slice the string twice, like this:
function spliceSlice(str, index, count, add) {
// We cannot pass negative indexes directly to the 2nd slicing operation.
if (index < 0) {
index = str.length + index;
if (index < 0) {
index = 0;
}
}
return str.slice(0, ...
Add missing dates to pandas dataframe
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You could use Series.reindex:
import pandas as pd
idx = pd.date_range('09-01-2013', '09-30-2013')
s = pd.Series({'09-02-2013': 2,
'09-03-2013': 10,
'09-06-2013': 5,
'09-07-2013': 1})
s.index = pd.Date...
Where does PostgreSQL store the database?
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The location of specific tables/indexes can be adjusted by TABLESPACEs:
CREATE TABLESPACE dbspace LOCATION '/data/dbs';
CREATE TABLE something (......) TABLESPACE dbspace;
CREATE TABLE otherthing (......) TABLESPACE dbspace;
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What's the difference between a temp table and table variable in SQL Server?
...them:
Temporary Tables are real tables so you can do things like CREATE INDEXes, etc. If you have large amounts of data for which accessing by index will be faster then temporary tables are a good option.
Table variables can have indexes by using PRIMARY KEY or UNIQUE constraints. (If you want a ...
How to get the index of an item in a list in a single step?
How can I find the index of an item in a list without looping through it?
7 Answers
7
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Add one row to pandas DataFrame
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You can use df.loc[i], where the row with index i will be what you specify it to be in the dataframe.
>>> import pandas as pd
>>> from numpy.random import randint
>>> df = pd.DataFrame(columns=['lib', 'qty1', 'qty2'])
>>> for i i...