大约有 40,000 项符合查询结果（耗时：0.0428秒） [XML]
How do I use the conditional operator (? :) in Ruby?
... Small edit puts (true ? "true" : "false") with parenthesis. Otherwise the order of operations is not clear. When I first read this I was confused as I read it as (puts true) ? "true" : "false" then expected puts to return the boolean which then became the string value.
– Fres...
PostgreSQL “DESCRIBE TABLE”
...AND c.relname = '%s' -- Replace with table name
AND f.attnum > 0 ORDER BY number
;
It's pretty complex but it does show you the power and flexibility of the PostgreSQL system catalog and should get you on your way to pg_catalog mastery ;-). Be sure to change out the %s's in the query. T...
Does reading an entire file leave the file handle open?
...
Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
...
How do I check if file exists in Makefile so I can delete it?
...
In order for this to work you need to add || true at the end so the command return true when file don't exists.
– jcubic
Jan 21 '18 at 14:17
...
How to convert string into float in JavaScript?
...t( +(str) + 0.2 );
+(string) will cast string into float.
Handy!
So in order to solve your problem, you can do something like this:
var floatValue = +(str.replace(/,/,'.'));
share
|
improve th...
Using $_POST to get select option value from HTML
...
Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
...
java.lang.OutOfMemoryError: Java heap space
...t like so: java -Xmx512m -Xms512m -jar division.jar - all is fine. So the order of params is also important.
– hipokito
May 21 '16 at 12:15
...
Update Angular model after setting input value with jQuery
...
You have to use the following code in order to update the scope of the specific input model as follows
$('button').on('click', function(){
var newVal = $(this).data('val');
$('select').val(newVal).change();
var scope = angular.element($("select")).s...
How can I test if a letter in a string is uppercase or lowercase using JavaScript?
...
Convert the entire string just in order to check the ASCII value of one character? Wasteful.
– Engineer
Aug 16 '19 at 14:31
add a comm...
Building a complete online payment gateway like Paypal [closed]
...
Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
...