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How do you calculate log base 2 in Java for integers?
...teger.numberOfLeadingZeros() (20-30%) and almost 10 times faster (jdk 1.6 x64) than a Math.log() based implementation like this one:
private static final double log2div = 1.000000000001 / Math.log( 2 );
public static int log2fp0( int bits )
{
if( bits == 0 )
return 0; // or throw except...
How do you crash a JVM?
...roaching the 4 Gb memory limit under the 32-bit versions (we generally use 64-bit now).
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How to upgrade Git on Windows to the latest version?
...installer from https://git-scm.com/download (check whether you want 32- or 64-bit) and run it to upgrade.
If you already have the latest version it does nothing, in which case you can manually run the installer to reinstall.
C:\> git update-git-for-windows
Git for Windows 2.17.0.windows.1 (64bi...
What is a typedef enum in Objective-C?
...Rosenfield
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javac is not recognized as an internal or external command, operable program or batch file [closed]
...
CommonProgramFiles(x86)=C:\Program Files (x86)\Common Files
CommonProgramW6432=C:\Program Files\Common Files
...
The most important variable is PATH. It is a list of paths, separated by ;. When a command is entered into cmd, each directory in the list will be scanned for a matching executable.
O...
What's the advantage of a Java enum versus a class with public static final fields?
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casablancacasablanca
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Why does typeof NaN return 'number'?
...9: Number value
primitive value corresponding to a double-precision 64-bit binary format IEEE 754 value.
ECMA 262 5e Section 4.3.23: NaN
Number value that is a IEEE 754 "Not-a-Number" value.
IEEE 754 on Wikipedia
The IEEE Standard for Floating-Point Arithmetic is a ...
Python: Convert timedelta to int in a dataframe
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abeboparebopabeboparebop
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How to switch to the new browser window, which opens after click on the button?
...Security → Untick Enable Enhanced Protected Mode
Code:
Browser: IE11 x64 (Zoom: 100%)
OS: Windows 7 x64
Selenium: 3.5.1
WebDriver: IEDriverServer x64 3.5.1
public static String openWindow(WebDriver driver, By by) throws IOException {
String parentHandle = driver.getWindowHandle(); // Save pare...
Why is it bad style to `rescue Exception => e` in Ruby?
... it:
loop do
begin
sleep 1
eval "djsakru3924r9eiuorwju3498 += 5u84fior8u8t4ruyf8ihiure"
rescue Exception
puts "I refuse to fail or be stopped!"
end
end
Rescuing from Exception isn't even the default. Doing
begin
# iceberg!
rescue
# lifeboats
end
does not rescue from Excep...