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Check if PHP session has already started
...start() on this script I sometimes get the error message for "session already started". For that I've put these lines:
26 ...
Global Git ignore
...tion and populated with the ignore list. (from muruge's comment)
You can read about the command at https://help.github.com/articles/ignoring-files/#create-a-global-gitignore
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Get loop counter/index using for…of syntax in JavaScript
...ctually did mean for…in – enumerating properties – you would need an additional counter. Object.keys(obj).forEach could work, but it only includes own properties; for…in includes enumerable properties anywhere on the prototype chain.
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How to get JSON from URL in JavaScript?
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JWF
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answered Sep 17 '12 at 13:37
Dan BarzilayDan Barzilay
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How to change Elasticsearch max memory size
...t still showed:
/usr/bin/java -Xms2g -Xmx2g # aka 2G min and max ram
I had to make these changes in:
/etc/elasticsearch/jvm.options
# Xms represents the initial size of total heap space
# Xmx represents the maximum size of total heap space
-Xms1g
-Xmx1g
# the settings shipped with ES 5 were:...
Long press gesture on UICollectionViewCell
I was wondering how to add a long press gesture recognizer to a (subclass of) UICollectionView. I read in the documentation that it is added by default, but I can't figure out how.
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Spring Boot - Cannot determine embedded database driver class for database type NONE
...nough information to auto-configure a DataSource. To do so, you'll need to add some properties to application.properties with the spring.datasource prefix. Take a look at DataSourceProperties to see all of the properties that you can set.
You'll need to provide the appropriate url and driver class...
How to define an empty object in PHP
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zombatzombat
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How do I get the first n characters of a string without checking the size or going out of bounds?
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Opinion: while this solution is "neat", I think it is actually less readable than a solution that uses if / else in the obvious way. If the reader hasn't seen this trick, he/she has to think harder to understand the code. IMO, the code's meaning is more obvious in the if / else version. For ...
What is the most efficient way to concatenate N arrays?
...s, the fact that push accepts multiple arguments consisting of elements to add to the array can be used instead to add elements from one array to the end of another without producing a new array. With slice() it can also be used instead of concat() but there appears to be no performance advantage fr...