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How to select rows from a DataFrame based on column values?
...r, that if you wish to do this many times, it is more efficient to
make an index first, and then use df.loc:
df = df.set_index(['B'])
print(df.loc['one'])
yields
A C D
B
one foo 0 0
one bar 1 2
one foo 6 12
or, to include multiple values from the index use df...
Javascript Object push() function
... = { "ID": "2", "Status": "Invalid" };
// ...
var tempData = [];
for ( var index=0; index<data.length; index++ ) {
if ( data[index].Status == "Valid" ) {
tempData.push( data );
}
}
data = tempData;
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How to get the sizes of the tables of a MySQL database?
...les first):
SELECT
table_name AS `Table`,
round(((data_length + index_length) / 1024 / 1024), 2) `Size in MB`
FROM information_schema.TABLES
WHERE table_schema = "$DB_NAME"
AND table_name = "$TABLE_NAME";
or this query to list the size of every table in every database, largest fir...
git index.lock File exists when I try to commit, but cannot delete the file
...ext who need this solution.
On linux/unix/gitbash/cygwin, try
rm -f .git/index.lock
On Windows Command Prompt, try:
del .git\index.lock
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foll...
Rails get index of “each” loop [duplicate]
...
<% @images.each_with_index do |page, index| %>
<% end %>
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Move an item inside a list?
In Python, how do I move an item to a definite index in a list?
5 Answers
5
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static files with express.js
I want to serve index.html and /media subdirectory as static files. The index file should be served both at /index.html and / URLs.
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How to find the array index with a value?
...
You can use indexOf:
var imageList = [100,200,300,400,500];
var index = imageList.indexOf(200); // 1
You will get -1 if it cannot find a value in the array.
s...
How to replace part of string by position?
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ReplaceAt(int index, int length, string replace)
Here's an extension method that doesn't use StringBuilder or Substring. This method also allows the replacement string to extend past the length of the source string.
//// str - the source ...
How to get the selected index of a RadioGroup in Android
Is there an easy way to get the selected index of a RadioGroup in Android or do I have to use OnCheckedChangeListener to listen for changes and have something that holds the last index selected?
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