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Hidden Features of MySQL
...he SQL queries to guide MySQL to execute them faster.
Administration:
max_connections is the number of concurrent connections. The default value is 100 connections (151 since 5.0) - very small.
Note:
connections take memory and your OS might not be able to handle a lot of connections.
MySQL b...
How to prevent errno 32 broken pipe?
Currently I am using an app built in python. When I run it in personal computer, it works without problems.
4 Answers
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How do I check if a string contains a specific word?
...ucts like !strpos($a, 'are').
Edit:
Now with PHP 8 you can do this:
if (str_contains('How are you', 'are')) {
echo 'true';
}
RFC
str_contains
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How can I remove a specific item from an array?
...exactly identical to the original one after splicing that one item. So, my app went into an infinite loop.
– Teddy
Jul 25 at 10:55
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mongodb: insert if not exists
... This is almost what I want ! How can I not touch the insertion_date field if the object is already present ?
– LeMiz
May 27 '10 at 21:24
28
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Fastest way to check a string contain another substring in JavaScript?
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I'm writing an Office 2013 App, using Microsoft's Office Javascript API, and using indexOf doesn't work. I'm not sure why. Using Regex though does. This is an edge case, but others might run into the same issue.
– Andy Mercer
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Numpy: Get random set of rows from 2D array
...st, but this is what works best for me:
A[np.random.choice(A.shape[0], num_rows_2_sample, replace=False)]
change the replace=False to True to get the same thing, but with replacement.
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im...
Convert XmlDocument to String
...using Windows.Data.Xml.Dom.XmlDocument version of XmlDocument (used in UWP apps for example), you can use yourXmlDocument.GetXml() to get the XML as a string.
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How to stop EditText from gaining focus at Activity startup in Android
...setting android:focusableInTouchMode="true" to parent layout was the good approach thanks @Muhammad Babar
– sujith s
Mar 24 '15 at 10:15
8
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Merging two images in C#/.NET
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basically i use this in one of our apps:
we want to overlay a playicon over a frame of a video:
Image playbutton;
try
{
playbutton = Image.FromFile(/*somekindofpath*/);
}
catch (Exception ex)
{
return;
}
Image frame;
try
{
frame = Image.FromFile(...