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How to see query history in SQL Server Management Studio
Is the query history stored in some log files? If yes, can you tell me how to find their location? If not, can you give me any advice on how to see it?
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Make first letter of a string upper case (with maximum performance)
...lly old answers
public static string FirstCharToUpper(string input)
{
if (String.IsNullOrEmpty(input))
throw new ArgumentException("ARGH!");
return input.First().ToString().ToUpper() + String.Join("", input.Skip(1));
}
EDIT:
This version is shorter. For a faster solution take a lo...
How do I convert uint to int in C#?
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Given:
uint n = 3;
int i = checked((int)n); //throws OverflowException if n > Int32.MaxValue
int i = unchecked((int)n); //converts the bits only
//i will be negative if n > Int32.MaxValue
int i = (int)n; //same behavior as unchecked
or
int i = Convert.ToInt3...
MySQL load NULL values from CSV data
...field into a local variable, and then sets the actual field value to NULL, if the local variable ends up containing an empty string:
LOAD DATA INFILE '/tmp/testdata.txt'
INTO TABLE moo
FIELDS TERMINATED BY ","
LINES TERMINATED BY "\n"
(one, two, three, @vfour, five)
SET four = NULLIF(@vfour,'')
;
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Is it safe to check floating point values for equality to 0?
...equality between double or decimal type values normally, but I'm wondering if 0 is a special case.
9 Answers
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static const vs #define
... don't know exactly what you are getting at with the "static" part though. If you are declaring globally, I'd put it in an anonymous namespace instead of using static. For example
namespace {
unsigned const seconds_per_minute = 60;
};
int main (int argc; char *argv[]) {
...
}
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Database: To delete or not to delete records
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It definitely depends on the actual content of your database. If you're using it to store session information, then by all means wipe it immediately when the session expires (or is closed), you don't want that garbage lying around. As it cannot really be used again for any practical pur...
Call removeView() on the child's parent first
...t. since there is no parent at the beginning, there is nothing to remove. if (mAdView.getParent()!=null) ((ViewGroup) mAdView.getParent()).removeView(mAdView);
– Tarek
Sep 8 '16 at 19:46
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Proper way to catch exception from JSON.parse
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i post something into an iframe then read back the contents of the iframe with json parse...so sometimes it's not a json string
Try this:
if(response) {
try {
a = JSON.parse(response);
} catch(e) {
alert(e); // error in the...
Why are global variables evil? [closed]
...so Evil? - Software Engineering Stack Exchange
Are global variables bad?
If you want to go deeper and find out why side effects are all about, and many other enlightening things, you should learn Functional Programming:
Side effect (computer science) - Wikipedia
Why are side-effects considered e...