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MongoDB atomic “findOrCreate”: findOne, insert if nonexistent, but do not update
...ode the syntax would be more like collection.findAndModify({_id:'theId'}, <your sort opts>, {$setOnInsert:{foo: 'bar'}}, {new:true, upsert:true}, callback). See the docs
– numbers1311407
Jun 3 '14 at 13:12
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Send message to specific client with socket.io and node.js
...re; ^ TypeError: undefined is not a function at Object.<anonymous> (C:\Users\Dev\Desktop\nouty-server\server.js:108:14) at Module._compile (module.js:460:26) at Object.Module._extensions..js (module.js:478:10) at Module.load (module.js:355:32) at Function.Mod...
Converting a column within pandas dataframe from int to string
... [20]: df['A'].apply(str)[0]
Out[20]: '0'
Don't forget to assign the result back:
df['A'] = df['A'].apply(str)
Convert the whole frame
In [21]: df.applymap(str)
Out[21]:
A B
0 0 1
1 2 3
2 4 5
3 6 7
4 8 9
In [22]: df.applymap(str).iloc[0,0]
Out[22]: '0'
df = df.applymap(st...
How to make a JTable non-editable
...eModel{
//not necessary
}
actually isCellEditable() is false by default so you may omit it. (see: http://docs.oracle.com/javase/6/docs/api/javax/swing/table/AbstractTableModel.html)
Then use the setModel() method of your JTable.
JTable myTable = new JTable();
myTable.setModel(new MyModel());...
Change Git repository directory location.
...
Although the previous answers all seem to say that you can just move the directory and there are no absolute paths in the .git structure. I found this to be untrue when using git from Cygwin.
When I moved my git repo (in fact...
How to resolve “must be an instance of string, string given” prior to PHP 7?
... an instanceof the class or interface boolean, rather than of type bool:
<?php
function test(boolean $param) {}
test(true);
?>
The above example will output:
Fatal error: Uncaught TypeError: Argument 1 passed to test() must be an instance of boolean, boolean given, called in - ...
Split a string by a delimiter in python
...limiter.
import csv
csv.register_dialect( "myDialect", delimiter = "__", <other-options> )
lines = [ "MATCHES__STRING" ]
for row in csv.reader( lines ):
...
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Are PDO prepared statements sufficient to prevent SQL injection?
...As it turns out, there are 5 such encodings supported in MySQL 5.6 by default: big5, cp932, gb2312, gbk and sjis. We'll select gbk here.
Now, it's very important to note the use of SET NAMES here. This sets the character set ON THE SERVER. There is another way of doing it, but we'll get there soon...
Set markers for individual points on a line in Matplotlib
...all to plot.
For example, using a dashed line and blue circle markers:
plt.plot(range(10), linestyle='--', marker='o', color='b')
A shortcut call for the same thing:
plt.plot(range(10), '--bo')
Here is a list of the possible line and marker styles:
================ ===================...
How to convert int to char with leading zeros?
...ct right('00000' + cast(Your_Field as varchar(5)), 5)
It will get the result in 5 digits, ex: 00001,...., 01234
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