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Most efficient way to concatenate strings in JavaScript?
...loop that has many iterations, and in each iteration, I am creating a huge string with many += operators. Is there a more efficient way to create a string? I was thinking about creating a dynamic array where I keep adding strings to it and then do a join. Can anyone explain and give an example of ...
Formatting Numbers by padding with leading zeros in SQL Server
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This only works if the value passed in is a string, if you pass an integer you get out the same value you passed in.
– Mordy
Feb 13 '14 at 10:30
2
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How do you run a crontab in Cygwin on Windows?
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You need to also install cygrunsrv so you can set cron up as a windows service, then run cron-config.
If you want the cron jobs to send email of any output you'll also need to install either exim or ssmtp (before running cron-config.)
See /usr/...
Hibernate show real SQL [duplicate]
...in your example" because it it depends highly on what database he is using and if hibernate chooses to batch/prepare the statement.
– Adam Gent
Jan 2 '13 at 21:24
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Centering a background image, using CSS
...ter center;
That should work.
If not, why not make a div with the image and use z-index to make it the background? This would be much easier to center than a background image on the body.
Other than that try:
background-position: 0 100px;/*use a pixel value that will center it*/ Or I think you ...
date format yyyy-MM-ddTHH:mm:ssZ
...UTC
ISO 8601 (MSDN datetime formats)
Console.WriteLine(DateTime.UtcNow.ToString("s") + "Z");
2009-11-13T10:39:35Z
The Z is there because
If the time is in UTC, add a 'Z'
directly after the time without a
space. 'Z' is the zone designator for
the zero UTC offset. "09:30 UTC" is
t...
Should a function have only one return statement?
...ultiple exit points for clarity. We can compare the two approaches thus:-
string fooBar(string s, int? i) {
string ret = "";
if(!string.IsNullOrEmpty(s) && i != null) {
var res = someFunction(s, i);
bool passed = true;
foreach(var r in res) {
if(!r.Passed) {
p...
Converting many 'if else' statements to a cleaner approach [duplicate]
...ke this for each converter. Then you could set up a map like this:
Map<String, Converter> mimeTypeMap = new HashMap<String, Converter>();
mimeTypeMap.put("audio/mpeg", new MpegConverter());
Then your convertToMp3 method becomes like this:
Converter converter = mimeTypeMap.get(mimeTy...
ASP.NET MVC How to convert ModelState errors to json
... .ToList();
2nd EDIT:
You're looking for a Dictionary<string, string[]>:
var errorList = ModelState.ToDictionary(
kvp => kvp.Key,
kvp => kvp.Value.Errors.Select(e => e.ErrorMessage).ToArray()
);
...
Difference between std::system_clock and std::steady_clock?
...throw std::logic_error("QueryPerformanceCounter not supported: " + std::to_string(GetLastError()));
}
};
For Linux it is even easier. Just read the man page of clock_gettime and modify the code above.
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