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How to print Boolean flag in NSLog?
...og(flag ? @"Yes" : @"No");
?: is the ternary conditional operator of the form:
condition ? result_if_true : result_if_false
Substitute actual log strings accordingly where appropriate.
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DateTime “null” value
...a nullable DateTime, like this:
DateTime? MyNullableDate;
Or the longer form:
Nullable<DateTime> MyNullableDate;
And, finally, there's a built in way to reference the default of any type. This returns null for reference types, but for our DateTime example it will return the same as Date...
SQL “between” not inclusive
...fix this is:
SELECT *
FROM Cases
WHERE cast(created_at as date) BETWEEN '2013-05-01' AND '2013-05-01'
Another way to fix it is with explicit binary comparisons
SELECT *
FROM Cases
WHERE created_at >= '2013-05-01' AND created_at < '2013-05-02'
Aaron Bertrand has a long blog entry on dates...
What does PermGen actually stand for?
...n's client implementation with sharing on, classes.jsa is memory mapped to form the initial data, with about half read-only and half copy-on-write.
Java objects that are merely old are kept in the Tenured Generation.
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What is “406-Not Acceptable Response” in HTTP?
...n I tried to upload an image through the POSTMAN REST client in Base64 format. When I POST the image I am getting a 406 Not Acceptable Response . When I checked my database, the image was there and was successfully saved.
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Left Join With Where Clause
...ometimes, this works faster in MySQL, but compare it against the LEFT JOIN form to see what works best for you.
SELECT s.*, c.value
FROM settings s
LEFT JOIN character_settings c ON c.setting_id = s.id AND c.character_id = '1'
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Launching an application (.EXE) from C#?
...tring path = System.IO.Path.GetDirectoryName(
System.Windows.Forms.Application.ExecutablePath);
Process.Start(winpath + @"\Microsoft.NET\Framework\v1.0.3705\Installutil.exe",
path + "\\MyService.exe");
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How to add leading zeros for for-loop in shell? [duplicate]
...
Use the following syntax:
$ for i in {01..05}; do echo "$i"; done
01
02
03
04
05
Disclaimer: Leading zeros only work in >=bash-4.
If you want to use printf, nothing prevents you from putting its result in a variable for further use:
$ foo=$(printf "%02d" 5)
$...
Problems with entering Git commit message with Vim
...just going:
git commit -m "Message here"
So in your case:
git commit -m "Form validation added"
After you've added your files of course.
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Apache VirtualHost 403 Forbidden
...that often results in this error. You would also see a log message of the form "client denied by server configuration". The feature is requiring a user identity to access a directory. It is turned on by DEFAULT in the httpd.conf that ships with Apache. You can see the enabling of the feature wit...