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How to declare a variable in a PostgreSQL query
...ars.id')::int;
Config settings are always varchar values, so you need to cast them to the correct data type when using them. This works with any SQL client whereas \set only works in psql
The above requires Postgres 9.2 or later.
For previous versions, the variable had to be declared in postgre...
Swift - which types to use? NSString or String
...wift type, as in str.bridgeToObjectiveC().length for example. You can also cast a String to an NSString by using str as NSString.
However, the necessity for these techniques to explicitly use the Foundation types, or at least some of them, may be obsolete in the future, since from what is stated in...
Easy way to turn JavaScript array into comma-separated list?
... To get CSV of an array we can just use console.log(arr) or like you said, casting it as string automatically makes it CSV.
– sanpat
Aug 17 at 19:44
add a comment
...
How to securely save username/password (local)?
...hich you need to log into first.
The account details consist of username and password, and they need to be saved locally.
It's just a matter of security, so other people using the same computer can't see everyone's personal data.
What is the best/most secure way to save this data?
...
Java rounding up to an int using Math.ceil
...re only correct for integer division not for long division when values are casted to doubles. Counter examples are 4611686018427386880 / 4611686018427387137 fails on floor and 4611686018427386881 / 4611686018427386880 fails on ceil
– Wouter
Jul 11 '16 at 12:20
...
Why are const parameters not allowed in C#?
...hors assume is invariant about the object?
Nothing. The callee is free to cast away the const and mutate the object, so the caller has no guarantee that calling a method that takes a const actually will not mutate it. Similarly, the callee cannot assume that the contents of the object will not chan...
Android: android.content.res.Resources$NotFoundException: String resource ID #0x5
...Text(int) it will use this method instead of using the setText(String) and cast the value. Thus the TextView thinks of your input number as a resource value which obviously is not valid.
Solution is to cast your int value to string like this
android:text="@{String.valueOf(model.someIntegerVariabl...
Natural Sort Order in C#
...ax = source
.SelectMany(i => Regex.Matches(selector(i), @"\d+").Cast<Match>().Select(m => (int?)m.Value.Length))
.Max() ?? 0;
return source.OrderBy(i => Regex.Replace(selector(i), @"\d+", m => m.Value.PadLeft(max, '0')));
}
The above pads any numbers in the s...
Performance of FOR vs FOREACH in PHP
First of all, I understand in 90% of applications the performance difference is completely irrelevant, but I just need to know which is the faster construct. That and...
...
Deserializing JSON data to C# using JSON.NET
...as having issues where I had a pretty complex JSON string, when I tried to cast it to C# objects, anything marked as 'NotNull' would be missing from the object, even though it was present in the JSON string to begin with. Very strange. I used this method and it worked PERFECT!
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