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How to select only the first rows for each unique value of a column
...serted) AS First
FROM
MyTable
GROUP BY
CName
) foo
JOIN
MyTable M ON foo.CName = M.CName AND foo.First = M.Inserted
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Updating address bar with new URL without hash or reloading the page
...port - which is a lot of work when you could just make it a relative URL ("foo.html" or even "/foo.html") and let the browser take care of it.
– DimeCadmium
Jun 17 '18 at 5:20
1
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What is the difference between self-types and trait subclasses?
...a> trait DummyUser extends User {
| override def name: String = "foo"
| }
defined trait DummyUser
scala> trait Right extends Tweeter with User {
| val canDo = name
| }
defined trait Right
scala> trait RightAgain extends Tweeter with DummyUser {
| val canDo ...
How to execute Python scripts in Windows?
...="c:\python26\python.exe" "%1" %*
So on my machine, when I type "blah.py foo", it will execute this exact command, with no difference in results than if I had typed the full thing myself:
"c:\python26\python.exe" "blah.py" foo
If you type the same thing, including the quotation marks, then...
How to do a simple file search in cmd
...
dir /s *foo* searches in current folder and sub folders.
It finds directories as well as files.
where /s means(documentation):
/s Lists every occurrence of the specified file name within the
specified directory and all subdirecto...
How to escape a single quote inside awk
...r whatever) contains shell syntax, you also have to be careful. sed -e "s/$FOO/$BAR/" will not work if the intent is to replace the literal text $FOO with $BAR. The easiest way would be sed -e 's/$FOO/$BAR/.
– Kaz
Jun 9 '15 at 17:49
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What's the difference between and
... Object is not actually redundant. For example, <T extends Object & Foo> will cause T to become Object under erasure, whereas with <T extends Foo> it will become Foo under erasure. (This can matter if you're trying to retain compatibility with a pre-generics API that used Object.)
S...
Passing enum or object through an intent (the best solution)
...ring), as follows:
class Example implements Parcelable {
public enum Foo { BAR, BAZ }
public Foo fooValue;
public void writeToParcel(Parcel dest, int flags) {
parcel.writeString(fooValue == null ? null : fooValue.name());
}
public static final Creator<Example> CREATO...
Dynamic variable names in Bash
...
Why not just declare $varname="foo"?
– Ben Davis
May 19 '14 at 17:05
2
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汇编常用寄存器及指令基础总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...将value的地址放到 ebx中。
四、间接寻址语法
INTEL：Instr foo,segreg:[base+index*scale+disp]
AT&T：instr %segreg:disp(base,index,scale),foo
五、 后缀
AT&T 语法中大部分指令操作码的最后一个字母表示操作数大小， “b”表示 byte（一个字节...