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Why are dashes preferred for CSS selectors / HTML attributes?
...ops.
Also, using hyphens allows you to take advantage of the |= attribute selector, which selects any element containing the text, optionally followed by a dash:
span[class|="em"] { font-style: italic; }
This would make the following HTML elements have italic font-style:
<span class="em">...
Django filter queryset __in for *every* item in list
...query:
In [17]: print Photo.objects.filter(tags=t1).filter(tags=t2).query
SELECT "test_photo"."id"
FROM "test_photo"
INNER JOIN "test_photo_tags" ON ("test_photo"."id" = "test_photo_tags"."photo_id")
INNER JOIN "test_photo_tags" T4 ON ("test_photo"."id" = T4."photo_id")
WHERE ("test_photo_tags"."ta...
Remove all breakpoints in IntelliJ IDEA
...
Ctrl+Shift+F8
is using for removing all breakpoints.
Select upper breakpoint -> Ctrl+Shift+End -> Remove
On Mac Os use this:
Cmd + Shift + (Fn) + F8 on Mac OS
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Is Meyers' implementation of the Singleton pattern thread safe?
...ingleton& instance()
{
static bool initialized = false;
static char s[sizeof( Singleton)];
if (!initialized) {
initialized = true;
new( &s) Singleton(); // call placement new on s to construct it
}
return (*(reinterpret_cast<Singleton*>( &s)))...
How do I change the data type for a column in MySQL?
...n type to another type, you can generate queries using a query like this:
select distinct concat('alter table ',
table_name,
' modify ',
column_name,
' <new datatype> ',
if(is_nu...
How to redirect to a 404 in Rails?
...
Changed the selected answer to reflect the better practice. Thanks for the comments, guys!
– Yuval Karmi
Aug 14 '11 at 0:08
...
CSS selector for text input fields?
How can I target input fields of type 'text' using CSS selectors?
9 Answers
9
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How to use ADB Shell when Multiple Devices are connected? Fails with “error: more than one device an
...showing a menu when there are multiple devices connected:
$ adb $(android-select-device) shell
1) 02783201431feeee device 3) emulator-5554
2) 3832380FA5F30000 device 4) emulator-5556
Select the device to use, <Q> to quit:
To avoid typing you can just create an alias that included the device...
Automatically create an Enum based on values in a database lookup table?
... | 2 | Yellow |
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Construct a select to get the values you need:
select * from enums e inner join enum_values ev on ev.enums_id=e.id where e.id=0
Construct the source code for the enum and you'll get something like:
String enumSourceCode = "enum " + e...
How to get the date from jQuery UI datepicker
...tepicker_id').datepicker('getDate');
if (jsDate !== null) { // if any date selected in datepicker
jsDate instanceof Date; // -> true
jsDate.getDate();
jsDate.getMonth();
jsDate.getFullYear();
}
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