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How to select the last record of a table in SQL?
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to get the last row of a SQL-Database use this sql string:
SELECT * FROM TableName WHERE id=(SELECT max(id) FROM TableName);
Output:
Last Line of your db!
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improv...
list every font a user's browser can display
...we use a LLi so that the same matching fonts can get separated
var testString = "mmmmmmmmmmlli";
//we test using 72px font size, we may use any size. I guess larger the better.
var testSize = '72px';
var h = document.getElementsByTagName("body")[0];
// create a SPAN in the doc...
Associative arrays in Shell scripts
...you can use test -z ${variable+x} (the x doesn't matter, that could be any string). For an associative array in Bash, you can do similar; use test -z ${map[key]+x}.
– Brian Campbell
Feb 6 '14 at 5:00
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普通码农和CTO之间的差距，就是这7点了 - 杂谈 - 清泛网 - 专注C/C++及内核技术
...那么我们的沟通能力应该足够我们搞定“萌妹子”的。^_^
学习技术而不是工具
在新框架，新方法，新工具横行的今天我们很难判断出哪些是“技术”，哪些是“工具”。我个人认为程序员不存在——Java程序员、Python程序员、A...
What is a classpath and how do I set it?
...to go. I generally make sure my CLASSPATH environment variable is an empty string where I develop, whenever possible, so that I avoid global classpath issues (some tools aren't happy when the global classpath is empty though - I know of two common, mega-thousand dollar licensed J2EE and Java servers...
What's the difference between tilde(~) and caret(^) in package.json?
...sibilities
Set starting major-level and allow updates upward
* or "(empty string) any version
1 v >= 1
Freeze major-level
~0 (0) 0.0 <= v < 1
0.2 0.2 <= v < 1 // Can't do that with ^ or ~
~1 (1, ^1) 1 <= v < 2...
How to get the data-id attribute?
...ink</a>) you have to use
$(this).attr("data-id") // will return the string "123"
or .data() (if you use newer jQuery >= 1.4.3)
$(this).data("id") // will return the number 123
and the part after data- must be lowercase, e.g. data-idNum will not work, but data-idnum will.
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Is it possible only to declare a variable without assigning any value in Python?
...duced the notion of type comments to annotate variables:
# 'captain' is a string (Note: initial value is a problem)
captain = ... # type: str
PEP 526 aims at adding syntax to Python for annotating the types of variables (including class variables and instance variables), instead of expressing th...
What is the difference between a cer, pvk, and pfx file?
...2 == "PKCS12"
fully encrypted
.pem == .cer == .cert == "PEM"
base-64 (string) encoded X509 cert (binary) with a header and footer
base-64 is basically just a string of "A-Za-z0-9+/" used to represent 0-63, 6 bits of binary at a time, in sequence, sometimes with 1 or 2 "=" characters at the ve...
How to create an alias for a command in Vim?
...meone asked nearly the same question as I.
:command <AliasName> <string of command to be aliased>
will do the trick.
Please be aware that, as Richo points out, the user command must begin with a capital letter.
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