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Check if user is using IE
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@verism and others: check this answer that also works for IE 11: stackoverflow.com/a/21712356/114029
– Leniel Maccaferri
Nov 16 '14 at 1:10
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Log4net rolling daily filename with date in the file name
... <preserveLogFileNameExtension value="true" /> is the correct syntax and this is a great answer. How did the loss occur, may I ask?
– Larry B
Feb 12 '18 at 14:48
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PG undefinedtable error relation users does not exist
...llowing:
rake db:reset
The rake db:reset task will drop the database and set it up again. This is functionally equivalent to rake db:drop db:setup.
This is not the same as running all the migrations. It will only use the
contents of the current schema.rb file. If a migration can't be ro...
How to define a custom ORDER BY order in mySQL
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MySQL has a handy function called FIELD() which is excellent for tasks like this.
ORDER BY FIELD(Language,'ENU','JPN','DAN'), ID
Note however, that
It makes your SQL less portable, as other DBMSs might not have such function
When your...
Access Container View Controller from Parent iOS
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Yes, you can use the segue to get access the child view controller (and its view and subviews). Give the segue an identifier (such as alertview_embed), using the Attributes inspector in Storyboard. Then have the parent view controller (the one housing the container view) implement a method li...
How does '20 seconds' work in Scala?
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There are a few things going on.
First, Scala allows dots and parens to be omitted from many method calls, so 20 seconds is equivalent to 20.seconds()*.
Second, an "implicit conversion" is applied. Since 20 is an Int and Int has no seconds method, the compiler searches for an impli...
Python: Bind an Unbound Method?
...descriptors, so you can bind them by calling their __get__ method:
bound_handler = handler.__get__(self, MyWidget)
Here's R. Hettinger's excellent guide to descriptors.
As a self-contained example pulled from Keith's comment:
def bind(instance, func, as_name=None):
"""
Bind the functi...
What are “signed” cookies in connect/expressjs?
...igure out what "signed cookies" actually are.
There isn't much on the net, and if I try this:
4 Answers
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Why was the arguments.callee.caller property deprecated in JavaScript?
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Early versions of JavaScript did not allow named function expressions, and because of that we could not make a recursive function expression:
// This snippet will work:
function factorial(n) {
return (!(n>1))? 1 : factorial(n-1)*n;
}
[1,2,3,4,5].map(factorial);
// But this snippe...
Vibrate and Sound defaults on notification
I'm trying to get a default vibrate and sound alert when my notification comes in, but so far no luck. I imagine it's something to do with the way I set the defaults, but I'm unsure of how to fix it. Any thoughts?
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