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Why is printing “B” dramatically slower than printing “#”?
...e performance with output either eliminated, directed to /dev/null (NUL on Windows) or at least to a file. Displaying on any sort of Console is generally very expensive IO, and always distorts timings -- even if not as dramatically confusingly as this.
– Bob Kerns
...
JavaScript file upload size validation
...ject" on some browsers. So just see if it's there
// at all.)
if (!window.FileReader) {
bodyAppend("p", "The file API isn't supported on this browser yet.");
return;
}
input = document.getElementById('fileinput');
if (!input) {
bodyAppend("p", "Um, couldn...
base64 encoded images in email signatures
... multipart/alternative, multipart/related example as an mbox file (save as windows newline format and put a blank line at the end. And, use no extension or the .mbs extension):
From
From: from@example.com
To: to@example.com
Subject: HTML Messages with Embedded Pic in Signature
MIME-Version: 1.0
Co...
How to link godaddy domain with AWS Elastic Beanstalk environment?
...ervers:
In GoDaddy's Domain Manager export records via "Export Zone File (Windows)".
Import those records to Route 53 ("Import Zone File" button).
In GoDaddy's Domain Manager set custom DNS nameservers, obtained on the 2nd step:
Migrating might take some time (even days).
Now you can link you do...
print call stack in C or C++
...
Windows has CaptureStackBackTrace
– bobobobo
Aug 30 '13 at 22:13
2
...
Java's Virtual Machine and CLR
...
I have seen the JVM return memory back to Windows.
– Steve Kuo
Jan 27 '09 at 23:09
I'...
Where do I find the bashrc file on Mac?
... Just in case, ~/ means your home directory, so if you open a new terminal window that is where you will be "located". And the dot at the front makes the file invisible to normal ls command, unless you put -a or specify the file name.
Check this answer for more detail.
...
What is a serialVersionUID and why should I use it?
...
You can tell Eclipse to ignore these serialVersionUID warnings:
Window > Preferences > Java > Compiler > Errors / Warnings > Potential Programming Problems
In case you didn't know, there are a lot of other warnings you can enable in this section (or even have some reporte...
Why does z-index not work?
...ElementById("#yourElement"); // or use $0 in chrome;
do {
var styles = window.getComputedStyle(el);
console.log(styles.zIndex, el);
} while(el.parentElement && (el = el.parentElement));
There is a great article about stacking contexts on MDN
...
How does SSL really work?
...fication for the server certificate which it receives in Server Hello.
On Windows, you can see the certificate stores for client & Server via PowerShell. Execute the below from a PowerShell console.
PS Cert:> ls Location : CurrentUser StoreNames : {TrustedPublisher, ClientAuthIssuer, ...