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How to create a string with format?
...his could help you:
let timeNow = time(nil)
let aStr = String(format: "%@%x", "timeNow in hex: ", timeNow)
print(aStr)
Example result:
timeNow in hex: 5cdc9c8d
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Why does Clojure have “keywords” in addition to “symbols”?
...and functions and it's less common to manipulate them as objects directly except in macros and such. But there's nothing stopping you from using a symbol everywhere you use a keyword (if you don't mind quoting them all the time).
The easiest way to see the difference is to read Keyword.java and Sy...
How to add JTable in JPanel with null layout?
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Nested/Combination Layout Example
The Java Tutorial has comprehensive information on using layout managers. See the Laying Out Components Within a Container lesson for further details.
One aspect of layouts that is not covered well by the tutorial is...
How does the const constructor actually work?
...st constructor creates a "canonicalized" instance.
That is, all constant expressions begin canonicalized, and later these "canonicalized" symbols are used to recognize equivalence of these constants.
Canonicalization:
A process for converting data that has more than one possible representation in...
Warning: Null value is eliminated by an aggregate or other SET operation in Aqua Data Studio
....
whilst being used with a left join, where the counted object does not exist.
Using COUNT(*) in this case would also render incorrect results, as you would then be counting the total number of results (ie parents) that exist.
Using COUNT([uid]) IS a valid way of counting, and the warning is not...
How do you Encrypt and Decrypt a PHP String?
... The order of encryption and authentication is very important! One of the existing answers to this question made this mistake; as do many cryptography libraries written in PHP.
You should avoid implementing your own cryptography, and instead use a secure library written by and reviewed by cryptograp...
Determine distance from the top of a div to top of window with javascript
...the very top of a div to the top of the current screen? I just want the pixel distance to the top of the current screen, not the top of the document. I've tried a few things like .offset() and .offsetHeight , but I just can't wrap my brain around it. Thanks!
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VBoxManage: error: Failed to create the host-only adapter
I am running vagrant 1.4 and virtual box 4.3 on fedora 17 machine. When I do "vagrant up", I get this error:
32 Answers...
How do I create and read a value from cookie?
...d retrieving cookies.
function createCookie(name, value, days) {
var expires;
if (days) {
var date = new Date();
date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
expires = "; expires=" + date.toGMTString();
}
else {
expires = "";
}
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How do I close all open tabs at once?
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:wqa can be simplified to just :xa
– MattK
Jan 12 '11 at 20:42
145
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