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Flat file databases [closed]
...gt; array("dubayou.com","willwharton.com","codecream.com"),
"and_one" => "more");
and to save or update the db record for that user.
$dir = "../userdata/"; //make sure to put it bellow what the server can reach.
file_put_contents($dir.$user['name'],serialize($user));
and to lo...
What is the difference between IQueryable and IEnumerable?
What is the difference between IQueryable<T> and IEnumerable<T> ?
13 Answers
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Check if database exists in PostgreSQL using shell
...rows" will succeed. So we pipe this output through a bunch of built-in command line tools to only search in the first column.
The -t flag removes headers and footers:
my_db | my_user | UTF8 | en_US.UTF8 | en_US.UTF8 |
postgres | postgres | LATIN1 | en_US | en_US |
te...
When is it appropriate to use C# partial classes?
...was wondering if someone could give me an overview of why I would use them and what advantage I would gain in the process.
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Matplotlib 2 Subplots, 1 Colorbar
...
Just place the colorbar in its own axis and use subplots_adjust to make room for it.
As a quick example:
import numpy as np
import matplotlib.pyplot as plt
fig, axes = plt.subplots(nrows=2, ncols=2)
for ax in axes.flat:
im = ax.imshow(np.random.random((10,10...
搭建高可用mongodb集群（三）—— 深入副本集内部机制 - 大数据 & AI - 清...
...ervers are not up (from this server’s POV), remain in Secondary mode and stop.
if the last op time seems very old, stop and await human intervention.
else, using a consensus protocol, pick the server with the highest maxLocalOpOrdinal as the Primary.
大致翻译过来为使用一致...
What are the correct version numbers for C#?
...# known about at the time of this writing:
C# 1.0 released with .NET 1.0 and VS2002 (January 2002)
C# 1.2 (bizarrely enough); released with .NET 1.1 and VS2003 (April 2003). First version to call Dispose on IEnumerators which implemented IDisposable. A few other small features.
C# 2.0 released wit...
Why do most C developers use define instead of const? [duplicate]
...riable Length Array'. It is an array whose size is not known until runtime and can only be used for automatic variables (i.e. can only be allocated on the stack).
– Bart van Ingen Schenau
Oct 27 '10 at 12:44
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Error handling with node.js streams
What's the correct way to handle errors with streams? I already know there's an 'error' event you can listen on, but I want to know some more details about arbitrarily complicated situations.
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How can I easily convert DataReader to List? [duplicate]
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I have seen systems that use Reflection and attributes on Properties or fields to maps DataReaders to objects. (A bit like what LinqToSql does.) They save a bit of typing and may reduce the number of errors when coding for DBNull etc. Once you cache the generate...