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How to grab substring before a specified character jQuery or JavaScript
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This will not work if the string being searched does not contain an instance of the search character. It will return an empty string.
– David G
Aug 20 '15 at 19:48
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Constructor of an abstract class in C#
...at class call the base constructor.
public abstract class A{
private string data;
protected A(string myString){
data = myString;
}
}
public class B : A {
B(string myString) : base(myString){}
}
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How do you make a WPF slider snap only to discrete integer positions?
... will show decimals. If you also bind to an int at the same time the empty string will cause a conversion exception to be thrown that briefly bogs down the UI. These issues haven't been severe enough for me to look for solutions.
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git: switch branch without detaching head
...eckout localname
git push origin
For convenience, you may use the same string for localname & branchname
When you checked out origin/branchname you weren't really checking out a branch.
origin/branchname is a "remote" name, and you can get a list of them with
branch -a
If you have colo...
How to express a NOT IN query with ActiveRecord/Rails?
...this, if you are using Rails 4 look at the answers by Trung Lê` and VinniVidiVicci.
15 Answers
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How to initialize a JavaScript Date to a particular time zone
I have date time in a particular timezone as a string and I want to convert this to the local time. But, I don't know how to set the timezone in the Date object.
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Is it a good idea to index datetime field in mysql?
... for all cases. Yes, storing an integer is generally faster than storing a string, but what about all the DateTime functions MySQL exposes? Implementing them yourself would either have a negative effect on performance or functionality.
– Greg
Sep 26 '13 at 12:1...
String comparison in bash. [[: not found
I am trying to compare strings in bash. I already found an answer on how to do it on stackoverflow . In script I am trying, I am using the code submitted by Adam in the mentioned question:
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How to find gaps in sequential numbering in mysql?
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Update
ConfexianMJS provided much better answer in terms of performance.
The (not as fast as possible) answer
Here's version that works on table of any size (not just on 100 rows):
SELECT (t1.id + 1) as gap_starts_at,
(SELECT MIN(t3.id) -...
How do I negate a test with regular expressions in a bash script?
... Another reason to use this form it that it won't accidentally match substrings (e.g. fail to add "/bin" to the path because "/usr/bin" is already there).
– Gordon Davisson
Dec 28 '10 at 0:54
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