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MySQL CONCAT returns NULL if any field contain NULL
...se the following:
SELECT CONCAT_WS("",affiliate_name,':',model,'-',ip,... etc)
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Determining the current foreground application from a background task or service
...d, which knows when any of the built-in applications (messaging, contacts, etc) is running.
13 Answers
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What is the difference between and ?
... tags very often contain other elements, like <strong> or <em> etc. The content of a <p> tag should be what its name implies: a paragraph of text. Paragraphs of text often contain additional markup. There's nothing even remotely unusual or wrong with that.
– D...
Why shouldn't Java enum literals be able to have generic type parameters?
...Argument(Class<X> clazz) { this.clazz = clazz; }
Class<X> getClazz() { return clazz; }
}
Class<String> cs = Argument.STRING.getClazz(); //uses sharper typing of enum constant
Unfortunately, the JEP is still struggling with significant issues: http://mail.openjdk.java.net/pip...
Using pg_dump to only get insert statements from one table within database
...dd -a before the -t if you only want the INSERTs, without the CREATE TABLE etc to set up the table in the first place.
version >= 8.4.0
pg_dump --column-inserts --data-only --table=<table> <database>
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Count the items from a IEnumerable without iterating?
...afely be exposed to code that shouldn't alter your underlying collection", etc.) would be very useful.
– supercat
Feb 19 '15 at 19:31
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How to determine the memory footprint (size) of a variable?
...libjudydebian1
sudo pecl install memprof
echo "extension=memprof.so" > /etc/php5/mods-available/memprof.ini
sudo php5enmod memprof
service apache2 restart
And then in my code:
<?php
memprof_enable();
// do your stuff
memprof_dump_callgrind(fopen("/tmp/callgrind.out", "w"));
Finally open the ...
How can I change an element's text without changing its child elements?
...nd check if it's not empty after the trim because spaces, tabs, new lines, etc. are also recognized as text nodes. If you need those nodes too then simple remove that from the if statement in the jQuery function.
I added an example how to replace first text node and how to replace all text nodes.
Th...
How to check if AlarmManager already has an alarm set?
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Please refrain from using "top answer" etc.. Instead provide a link to the answer. Because answers can change positions on the page based on popularity.
– Kathir
Dec 30 '18 at 6:48
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what's the correct way to send a file from REST web service to client?
... I've gotten the hang of how to send simple data types (strings, integers, etc) but sending a file is a different matter since there are so many file formats that I don't know where I should even begin. My REST service is made on Java and I'm using Jersey, I'm sending all the data using the JSON for...