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How do you add swap to an EC2 instance?
...nce.
Paging works by creating an area on your hard drive and using it for extra memory, this memory is much slower than normal memory however much more of it is available.
To add this extra space to your instance you type:
sudo /bin/dd if=/dev/zero of=/var/swap.1 bs=1M count=1024
sudo /sbin/mkswa...
Why split the tag when writing it with document.write()?
...s a valid escape sequence for /, so why not just use that instead of those string literal escapes for <? E.g. document.write('<script src=foo.js><\/script>');. Also, </script> is not the only character sequence that can close a <script> element. Some more info here: mathia...
Should a retrieval method return 'null' or throw an exception when it can't produce the return value
....
Whatever you do, I highly advise against the third option: Returning a string that says "WTF".
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AES Encryption for an NSString on the iPhone
Can anybody point me in the right direction to be able to encrypt a string, returning another string with the encrypted data? (I've been trying with AES256 encryption.) I want to write a method which takes two NSString instances, one being the message to encrypt and the other being a 'passcode' to e...
Is there a printf converter to print in binary format?
...es for what you want.
#include <stdio.h> /* printf */
#include <string.h> /* strcat */
#include <stdlib.h> /* strtol */
const char *byte_to_binary(int x)
{
static char b[9];
b[0] = '\0';
int z;
for (z = 128; z > 0; z >>= 1) {
strcat(b, ((x &am...
How to write header row with csv.DictWriter?
...
or
w.writerow([d.get(k, restval) for k in fieldnames])
Instead of the extrasaction "functionality", I'd prefer to code it myself; that way you can report ALL "extras" with the keys and values, not just the first extra key. What is a real nuisance with DictWriter is that if you've verified the k...
how to set radio option checked onload with jQuery
...roperties" section here: api.jquery.com/prop. Also there's no need for the extra filter, you can just combine the 2 selectors e.g. $("input[name=gender][value=Male]").prop("checked", true);
– jackocnr
Apr 2 '14 at 21:56
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How to check if an intent can be handled from some activity?
...n intent is not available,
fun isIntentAvailable(context: Context, action: String?): Boolean {
val packageManager = context.packageManager
val intent = Intent(action)
val resolveInfo: List<*> = packageManager.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY)
retu...
.append(), prepend(), .after() and .before()
...
There is no extra advantage for each of them. It totally depends on your scenario. Code below shows their difference.
Before inserts your html here
<div id="mainTabsDiv">
Prepend inserts your html here
<div id="home...
Foreign Key naming scheme
... style I'm actually using (but with camelCase)- I thought I'd add a bit of extra description into the names for the purposes of illustrating their linkages.
– nickf
Oct 14 '08 at 0:11
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