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typecast string to integer - Postgres
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If the value contains non-numeric characters, you can convert the value to an integer as follows:
SELECT CASE WHEN <column>~E'^\\d+$' THEN CAST (<column> AS INTEGER) ELSE 0 END FROM table;
The CASE operator checks the < column>, if it matches the integer pat...
How to find the duration of difference between two dates in java?
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Alternatively long diffInSeconds = TimeUnit.SECONDS.convert(duration,TimeUnit.MILLSECONDS);
– gerardw
Jul 3 '14 at 16:50
3
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How to change letter spacing in a Textview?
.... I get an error like this: "1.2dp" in attribute "letterSpacing" cannot be converted to float."
– dopatraman
Jan 16 '16 at 20:19
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Which Radio button in the group is checked?
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for you vb.net guys, I'll save you a trip to the Telerik converter: Dim checkedButton = radConnections.Controls.OfType(Of RadioButton)().FirstOrDefault(Function(r) r.Checked)
– JoshYates1980
Jun 24 '16 at 17:23
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Read/Write String from/to a File in Android
...)) != -1) {
sb.append(inputBuffer, 0, l);
}
// CONVERT BYTES TO STRING
String readString = sb.toString();
fis.close();
catch (Exception e) {
} finally {
if (fis != null) {
fis = null;
}
}
below code is to write t...
Best way to read a large file into a byte array in C#?
...Length to int instead of getting the long value of the FileInfo length and converting that.
– vapcguy
Oct 12 '16 at 0:15
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Never seen before C++ for loop
I was converting a C++ algorithm to C#.
I came across this for loop:
12 Answers
12
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Any way to declare an array in-line?
...shortArrayOf()
byteArrayOf()
If you already have a Collection and wish to convert it to an array inline, simply use:
collection.toTypedArray()
If you need to coerce an array type, use:
array.toIntArray()
array.toLongArray()
array.toCharArray()
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How to allocate aligned memory only using the standard library?
...he system — hence questions and answers like this.)
The next step is to convert the void pointer to a char pointer; GCC notwithstanding, you are not supposed to do pointer arithmetic on void pointers (and GCC has warning options to tell you when you abuse it). Then add 16 to the start pointer. ...
0.1 float is greater than 0.1 double. I expected it to be false [duplicate]
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I'd say the answer depends on the rounding mode when converting the double to float. float has 24 binary bits of precision, and double has 53. In binary, 0.1 is:
0.1₁₀ = 0.0001100110011001100110011001100110011001100110011…₂
^ ^ ^ ^
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