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Difference between as.POSIXct/as.POSIXlt and strptime for converting character vectors to POSIXct/PO
...character vectors to datetime classes. I often see 2 methods, the strptime and the as.POSIXct/as.POSIXlt methods. I looked at the 2 functions but am unclear what the difference is.
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How to query SOLR for empty fields?
I have a large solr index, and I have noticed some fields are not updated correctly (the index is dynamic).
7 Answers
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Can I install/update WordPress plugins without providing FTP access?
... has write access to the necessary files, it will take care of the updates and installation automatically. This method does not require you to have FTP/SFTP or SSH access, but it does require your to have specific file permissions set up on your webserver.
It will try various methods in order, and ...
Regexp Java for password validation
...dependent "module".
The (?=.*[xyz]) construct eats the entire string (.*) and backtracks to the first occurrence where [xyz] can match. It succeeds if [xyz] is found, it fails otherwise.
The alternative would be using a reluctant qualifier: (?=.*?[xyz]). For a password check, this will hardly mak...
NAnt or MSBuild, which one to choose and when?
I am aware there are other NAnt and MSBuild related questions on Stack Overflow, but I could not find a direct comparison between the two and so here is the question.
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Java LinkedHashMap get first or last entry
...ions has its own LinkedMap implementation, which has methods like firstKey and lastKey, which do what you're looking for. The interface is considerably richer.
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UIButton: Making the hit area larger than the default hit area
I have a question dealing with UIButton and its hit area. I am using the Info Dark button in interface builder, but I am finding that the hit area is not large enough for some people's fingers.
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How to add and get Header values in WebApi
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Perfect... I used the beforeSend and it worked. Awesome :) +1
– Si8
Jan 30 '17 at 14:50
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How to validate an email address using a regular expression?
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The fully RFC 822 compliant regex is inefficient and obscure because of its length. Fortunately, RFC 822 was superseded twice and the current specification for email addresses is RFC 5322. RFC 5322 leads to a regex that can be understood if studied for a few minutes and i...
How do I strip non alphanumeric characters from a string and keep spaces?
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Just to precise, this remove all accented letters and may not be adapted to some languages.
– Uelb
Nov 25 '15 at 16:25
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