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How do I clear a search box with an 'x' in bootstrap 3?
...efox users could instead select the text and press delete, or...
If you really need this nice-to-have feature supported in Firefox, then you could implement one of the other solutions posted here as a polyfill for input[type=search] elements. A polyfill is code that automatically adds a standard br...
Shell script to delete directories older than n days
..., you can replace the ; with + and it will do the equivalent of the xargs call for you, passing as many files as will fit on each exec system call:
find . -type d -ctime +10 -exec rm -rf {} +
share
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How can javascript upload a blob?
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To do basically $('input[type=file]').value=blob
– William Entriken
Aug 9 '13 at 21:36
14
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How to overcome “datetime.datetime not JSON serializable”?
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Why did I go all my life not knowing this. :)
– Arel
May 3 '19 at 15:24
1
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How to avoid type safety warnings with Hibernate HQL results?
...way to do it, though it does involve a bit of finger typing each time you call q.list().
There are two other techniques I'd suggest:
Write a cast-helper
Simply refactor all your @SuppressWarnings into one place:
List<Cat> cats = MyHibernateUtils.listAndCast(q);
...
public static <T>...
What does the construct x = x || y mean?
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It means the title argument is optional. So if you call the method with no arguments it will use a default value of "Error".
It's shorthand for writing:
if (!title) {
title = "Error";
}
This kind of shorthand trick with boolean expressions is common in Perl too. With the...
In C#, how can I create a TextReader object from a string (without writing to disk)
...text into a webpage. The Fast CSV reader requires a TextReader object, and all I have is a string. What's the best way to convert a string into a TextReader object on the fly?
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How do you determine what SQL Tables have an identity column programmatically
... When t.name = ''tinyint'' Then 255
When t.name = ''smallint'' Then 32767
When t.name = ''int'' Then 2147483647
When t.name = ''bigint'' Then 9223372036854775807
End As [max_value]
From
syscolumns As id
Join syst...
PostgreSQL: Difference between text and varchar (character varying)
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There is no difference, under the hood it's all varlena (variable length array).
Check this article from Depesz: http://www.depesz.com/index.php/2010/03/02/charx-vs-varcharx-vs-varchar-vs-text/
A couple of highlights:
To sum it all up:
char(n) – takes t...
如何选择机器学习算法 - 大数据 & AI - 清泛网移动版 - 专注C/C++及内核技术
...g algorithm to choose for your classification problem? Of course, if you really care about accuracy, your best bet is to test out a couple different ones (making sure to try different parameters within each algorithm as well), and select the best one by cross-validation. But if you’re simply l...