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Safely casting long to int in Java
...h Java 8 to do just that.
import static java.lang.Math.toIntExact;
long foo = 10L;
int bar = toIntExact(foo);
Will throw an ArithmeticException in case of overflow.
See: Math.toIntExact(long)
Several other overflow safe methods have been added to Java 8. They end with exact.
Examples:
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How do I get indices of N maximum values in a NumPy array?
...nity wiki
3 revs, 3 users 95%Fred Foo
27
...
powershell 2.0 try catch how to access the exception
...try {
$w = New-Object net.WebClient
$d = $w.downloadString('http://foo')
}
catch [Net.WebException] {
Write-Host $_.Exception.ToString()
}
The exception is in the $_ variable. You might explore $_ like this:
try {
$w = New-Object net.WebClient
$d = $w.downloadString('http://fo...
How to get an MD5 checksum in PowerShell
...8.GetBytes($someString)))
If the content is a file:
$someFilePath = "C:\foo.txt"
$md5 = New-Object -TypeName System.Security.Cryptography.MD5CryptoServiceProvider
$hash = [System.BitConverter]::ToString($md5.ComputeHash([System.IO.File]::ReadAllBytes($someFilePath)))
Starting in PowerShell ve...
What does “while True” mean in Python?
...ted to true.
When I first started programming I used to do things like if(foo == true), I didn't realise that was virtually the same thing as if(foo).
So when you say while(true) its like are saying while(true == true)
So to answer you question: While TRUE is True.
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How to test an SQL Update statement before running it?
...t using the same WHERE clause as the UPDATE.
So if you UPDATE is
UPDATE foo
SET bar = 42
WHERE col1 = 1
AND col2 = 'foobar';
The following will show you which rows will be updated:
SELECT *
FROM foo
WHERE col1 = 1
AND col2 = 'foobar';
...
What's the best way to build a string of delimited items in Java?
...ava 8 you can use String.join():
List<String> list = Arrays.asList("foo", "bar", "baz");
String joined = String.join(" and ", list); // "foo and bar and baz"
Also have a look at this answer for a Stream API example.
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How to turn off the Eclipse code formatter for certain sections of Java code?
...hat you want.
Else there is this ugly hack
String query = //
"SELECT FOO, BAR, BAZ" + //
" FROM ABC" + //
" WHERE BAR > 4";
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Static and Sealed class differences
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static class Foo : object { } is valid, but is essentially static class Foo { }.
– themefield
Apr 24 '19 at 17:41
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how do I use the grep --include option for multiple file types?
... in this case, because only files literally named something like --include=foo.html would match. To be safe, quote the * (which can you do individually with \*). As an added bonus this makes it visually clearer that is not the shell that should perform the globbing in this case.
...