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Inverse dictionary lookup in Python
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There is none. Don't forget that the value may be found on any number of keys, including 0 or more than 1.
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What is a regular expression which will match a valid domain name without a subdomain?
I need to validate a domain name:
20 Answers
20
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How to Use Order By for Multiple Columns in Laravel 4?
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@FireCoding, you can do $user->orders = array(array('column' => 'name', 'direction' => 'desc'), array('column' => 'email', 'direction' => 'asc'));
– rmobis
Oct 7 '14 at 4:47
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How to add a filter class in Spring Boot?
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How does one know the order in which the filters are applied?
– BeepDog
May 26 '16 at 21:10
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how to get the one entry from hashmap without iterating
...s also why there is no get-by-index method on Map (or HashMap).
You could do this:
Map<String, String> map = ...; // wherever you get this from
// Get the first entry that the iterator returns
Map.Entry<String, String> entry = map.entrySet().iterator().next();
(Note: Checking for a...
MySQL Creating tables with Foreign Keys giving errno: 150
... utilized with an inconsistent relationship defined by mistake. See @andrewdotn's answer below for instructions on how to identify these problem FK's.
Hope this helps.
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How can I use mySQL replace() to replace strings in multiple records?
...n LIKE '%PATTERN%'
In your case you say these were escaped but since you don't specify how they were escaped, let's say they were escaped to GREATERTHAN
UPDATE MyTable
SET StringColumn = REPLACE (StringColumn, 'GREATERTHAN', '>')
WHERE articleItem LIKE '%GREATERTHAN%'
Since your query is a...
How to export JavaScript array info to csv (on client side)?
I know there are lot of questions of this nature but I need to do this using JavaScript. I am using Dojo 1.8 and have all the attribute info in array, which looks like this:
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jQuery UI DatePicker - Change Date Format
...orKnowledge just use y. datepicker-formatting
– Shadoath
Mar 24 '15 at 17:08
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Read only the first line of a file?
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Use the .readline() method (Python 2 docs, Python 3 docs):
with open('myfile.txt') as f:
first_line = f.readline()
Some notes:
As noted in the docs, unless it is the only line in the file, the string returned from f.readline() will contain a trailing ne...