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Best way to give a variable a default value (simulate Perl ||, ||= )
...so don't use it with anything heavy as a second parameter, like a file_get_contents or something. In those cases, you're better off with isseting.
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Cron jobs and random times, within given hours
I need the ability to run a m>PHP m> script 20 times a day at completely random times. I also want it to run only between 9am - 11pm.
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Android - How to get application name? (Not package name)
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Just beware that it will throw android.content.res.Resources$NotFoundm>Ex m>ception if the string is not found
– zenocon
Jan 17 '14 at 15:46
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Git: Ignore tracked files
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this adds filter for file which reads content from ".orig" file which has original tm>ex m>t
– koct9i
Jan 6 '19 at 19:09
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Want to m>ex m>clude file from “git diff”
...ectory where the file to be ignored by git diff resides with the following content:
file-not-to-diff.bin -diff
That still lets git status "see" if the file changed. git diff will also "see" that the file changed, but it will not generate the diff.
That .bin m>ex m>tension for the file in the m>ex m>ample w...
How to send JSON instead of a query string with $.ajax?
...SON.stringify to first serialize your object to JSON, and then specify the contentType so your server understands it's JSON. This should do the trick:
$.ajax({
url: url,
type: "POST",
data: JSON.stringify(data),
contentType: "application/json",
complete: callback
});
Note that...
Warning message: In `…` : invalid factor level, NA generated
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Here is a flm>ex m>ible approach, it can be used in all cases, in particular:
to affect only one column, or
the dataframe has been obtained from applying previous operations (e.g. not immediately opening a file, or creating a new data fra...
How to escape single quotes in MySQL
...re using to talk to MySQL will have an escaping function built in, e.g. in m>PHP m> you could use mysqli_real_escape_string or PDO::quote
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MySQL vs MongoDB 1000 reads
...okup on the collection (assuming the entity is fetched by id)
Retrieve the contents of one database page (the actual binary json document)
So a b-tree lookup, and a binary page read. Log(n) + 1 IOs. If the indm>ex m>es can reside entirely in memory, then 1 IO.
In MySQL with 20 tables, you have to perf...
Back to previous page with header( “Location: ” ); in m>PHP m>
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This sounded really clever, but in FF10 I get "Corrupted Content Error The page you are trying to view cannot be shown because an error in the data transmission was detected." So this is basically unusable.
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