走过海棠暮

文章 0 评论 0 浏览 24

走过海棠暮 2024-12-11 03:50:36

我推荐使用 twython 作为 Python Twitter 库。它会定期维护,考虑到 Twitter 更改其 API 的频率,这是一个有用的属性。

编辑:请参阅 tweetstream 作为过滤功能的简单流 API 实现。

I recommend twython for a Python Twitter library. It is regularly maintained, a useful property considering how often Twitter changes its API.

EDIT: See tweetstream for a simple streaming API implementation which as filtering capabilities.

Python Twitter 流 API - 仅限关注的用户

走过海棠暮 2024-12-11 02:17:55

对于占位符垂直居中:

input::placeholder{
position:relative !important;
top:50% !important;
transform:translateY(-50%) !important; 
}

For vertically centering the placeholder:

input::placeholder{
position:relative !important;
top:50% !important;
transform:translateY(-50%) !important; 
}

居中 HTML 输入文本字段占位符

走过海棠暮 2024-12-10 22:46:57

看看arm的thumb指令集,它们显示了一个很好的操作码映射,它在某种程度上与你所说的相关。或者在github上寻找lsasim,在那里我发明了自己的指令集,有些指令只需要四位操作码来弄清楚指令是什么,有些需要8。

我假设你问的是8位指令?正如汤姆所说,你控制水平,你控制垂直,你可以做任何你想做的事。您不会从两位操作码中得到太多,例如,也许您只有两个支持这些操作码的寄存器:

00riiiii  store pc relative, r = 0 means register r0, r = 1 means register r1 iiiii is sign extended and added to the program counter for the store address

01riiiii  load pc relative

此时,如果您将自己限制为固定的 8 位指令集,那么您已经完全消耗了操作码空间的一半。你没有具体说明你在做什么。继续我的想法,所有 0xxxxxxx 操作码现在都已被消耗,你必须以 1

1000ssddd  move rd to rs (assumes rs = r0 to r3 and rd = r0 to r7
1001ssddd  move rs to rd
1010ssddd  add rs=rs+rd
1011ssddd  sub rs=rs-rd

开始其余的操作码。你可以弥补你想要的任何东西。关键是它必须是你可以解码的东西,这将是有效的

100ss0dd some operation
100ss1dd another operation

,但这不会:

100ss0dd some operation
100ss1dd another operation
10iiiiii branch to pc plus sign extended immediate

因为你无法从其他两条指令中唯一地解码第三条指令,当你看到 10xxxxxx 时,它是一个分支吗?如果位 2 是 0,也不是如果位 2 是 1。arm

/thumb 操作码表在这方面绘制得非常好,从顶部开始,您的指令具有较少的操作码位和更多的操作数位,您需要首先选择这些,但要知道它们占用了操作码空间的很大一部分。那么你就会有更长的操作码和更少的操作数。

Look at the thumb instruction set from arm, they show a nice opcode map which is related in some way to what you are saying. Or look for lsasim at github, where I invented my own instruction set, some instructions only need four bits of opcode to figure out what the instruction is some need 8.

I assume you are asking about 8 bit instructions? As Tom said you control the horizontal, you control the vertical you can do whatever you want. You wont get much out of the two bit opcides, maybe you have only two registers that support those opcodes, for example:

00riiiii  store pc relative, r = 0 means register r0, r = 1 means register r1 iiiii is sign extended and added to the program counter for the store address

01riiiii  load pc relative

at this point though you have completely consumed HALF of your opcode space if you limit yourself to a fixed 8 bit instruction set. you didnt specify what you were doing. continuing with my thought all of the 0xxxxxxx opcodes are now consumed you have to start the rest with a 1

1000ssddd  move rd to rs (assumes rs = r0 to r3 and rd = r0 to r7
1001ssddd  move rs to rd
1010ssddd  add rs=rs+rd
1011ssddd  sub rs=rs-rd

etc.

You can make up whatever you want. The key is it has to be something you can decode, this would be valid

100ss0dd some operation
100ss1dd another operation

but this would not:

100ss0dd some operation
100ss1dd another operation
10iiiiii branch to pc plus sign extended immediate

because you cannot uniquely decode the third instruction from the other two, when you see 10xxxxxx is it a branch? well not if bit 2 is a 0 nor if bit 2 is a 1.

The arm/thumb opcode tables are very well drawn in this regard, starting at the top you have the instructions with fewer opcode bits and more operand bits, you need to chose those first but understand they use a large portion of your opcode space. then you have longer opcodes with fewer operands.

汇编操作码问题

走过海棠暮 2024-12-10 17:11:17

我不相信 PostgreSQL 有存储过程,只有函数。但是,您可以使用函数来完成您正在谈论的事情。

CREATE FUNCTION getQtyOrders(customerID int) RETURNS int AS $
DECLARE
qty int;
BEGIN
SELECT COUNT(*) INTO qty
FROM Orders
WHERE accnum = customerID;
RETURN qty;
END;

I don't believe PostgreSQL has stored procedures, only functions. However, you could do what you're talking about with a FUNCTION.

CREATE FUNCTION getQtyOrders(customerID int) RETURNS int AS $
DECLARE
qty int;
BEGIN
SELECT COUNT(*) INTO qty
FROM Orders
WHERE accnum = customerID;
RETURN qty;
END;

PostgreSQL 存储过程

走过海棠暮 2024-12-10 11:45:26

好吧,我明白了。如果您使用 MAMP 和 localhost 创建数据库,则只需转到 MAMP >分贝> mysql 文件夹,其中将包含您的所有数据库。

希望对使用 Sequel Pro / MAMP / Localhost 的人有所帮助!

Okay, I figured it out. If you are using MAMP and localhost to create databases, you just need to go to MAMP > db > mysql folder and in there will be all your databases.

Hope that helps anyone who uses Sequel Pro / MAMP / Localhost!

Sequel Pro / MAMP 在哪里存储本地数据库?

走过海棠暮 2024-12-10 10:05:32

该行代码调整浏览器大小以匹配屏幕尺寸。如果您希望最广泛的受众能够访问该网站,您仍然应该为 1024x768 编写网站。要么学习流畅的设计,但要确保它对于像您这样的大屏幕来说不会太大。
http://css-tricks.com/138-the-perfect-流体宽度布局/

That line of code resizes the browser to match the screen size. You should still code a website for 1024x768 if you want it reachable by the widest audience. Either that or learn about fluid designs, but make sure it doesn't get too big for large screens like yours.
http://css-tricks.com/138-the-perfect-fluid-width-layout/

调整 WordPress 网站大小以适应计算机分辨率

走过海棠暮 2024-12-10 08:47:16

您不妨在 ActionScript 中将 double 转换为 int 。您不会失去任何准确性,因为在 ActionScript 中,双精度数和整数具有相同的位深度。那么从 int 到 long long 的转换应该是自动的。

You might as well just convert your double to an int in ActionScript. You won't lose any accuracy because in ActionScript doubles and ints have the same bit depth. Then the conversion from int to long long should be automatic.

如何使用两个整数来表示 double 的整数部分

走过海棠暮 2024-12-10 08:22:22

如果您擅长阅读代码,那么学习 SQLite 将教会您有关数据库设计的全部知识。它很小,所以更容易把你的头围起来。但写得也很专业。

用于代码读取的 SQLite 2.5.0

http://sqlite.org/

If you're good at reading code, studying SQLite will teach you a whole boatload about database design. It's small, so it's easier to wrap your head around. But it's also professionally written.

SQLite 2.5.0 for Code Reading

http://sqlite.org/

如何编写一个简单的数据库引擎

走过海棠暮 2024-12-10 07:14:44

看一下过程的定义。如果它类似于 PROCEDURE a AUTHID CURRENT_USER ,那么它将使用 当前用户的权限和名称解析。如果该过程使用考虑用户权限的视图(例如user_objects),则可以解释不同的结果。


评论回复: 您的区分是错误的。想象一下,您编写了一个从 user_objects 返回第一行的 object_name 的过程。该过程由 schema_owner 所有,并且 schema_invoker 有权执行它。如果定义该过程时没有使用 AUTHID CURRENT_USER ,它将返回 schema_owner 架构中对象的对象名称。使用 AUTHID CURRENT_USER 的相同过程将从 schema_invoker 架构中返回对象名称。这与执行权限无关。

我不知道这是问题的根源,但它是一个很好的候选者,并且很容易检查(只需查看包规范中的过程定义)。

Take a look at the procedure's definition. If it's something like PROCEDURE a AUTHID CURRENT_USER then it will execute with the current user's permissions and name resolution. If the procedure uses views that take user privileges into account (such as user_objects), that could explain the different result.


Comment response: You're making the wrong distinction. Imagine that you write a procedure that returns the object_name of the first row from user_objects. That procedure is owned by schema_owner and schema_invoker has permission to execute it. If the procedure is defined without AUTHID CURRENT_USER, it will return an object name for an object in the schema_owner schema. The same procedure with AUTHID CURRENT_USER will return an object name from the schema_invoker schema instead. This has nothing to do with execution privileges.

I don't know that this is the source of your problem, but it's a good candidate and it's easy to check (just look at the procedure definition found in the package specification).

有人可以解释oracle中不同用户下相同函数的不同行为吗?

走过海棠暮 2024-12-10 06:58:44

只需包含这样一行:

<link href='http://fonts.googleapis.com/css?family=Sorts+Mill+Goudy' rel='stylesheet' type='text/css'>

然后将其添加到您的 css 中:

font-family: 'Sorts Mill Goudy', serif;

就是这样。

simply include a line like this:

<link href='http://fonts.googleapis.com/css?family=Sorts+Mill+Goudy' rel='stylesheet' type='text/css'>

and then add this to your css:

font-family: 'Sorts Mill Goudy', serif;

that's it.

如何在 coda 中使用 google web 字体?

走过海棠暮 2024-12-10 04:12:27

您的第一个问题是 .split() 不会将字符串拆分为字符,而是在空格处拆分字符串。

"12 34 56".split() == ["12", "34", "56"]

  • 要遍历输入字符串中的每个字符,请勿使用 .split(),只需使用 for character in string
  • 我发现很难阅读带有诸如 lolrofl 之类的变量名的代码,因此我对此进行了更改。
  • 您对 9 > 的检查整数(数字)> 0 不包括 90。我认为这是一个意外,所以我使用 0 <= int(digit) <= 9 并包含它们。
  • 您当前的代码每次看到无效字符时都会打印一条错误消息。相反,我将在第一次打印后跳出循环,如果循环完成而没有中断,则打印成功消息。
  • 如果 int(digit) 无法将 digit 转换为 int,则会引发异常。相反,我只是比较字符本身,看看它是否在 "0""9" 之间,而不是对其进行转换。
code = raw_input("what's your code?")

for digit in code:
    if not ("0" <= digit <= "9"):
        print "The verification code was not valid. Please check your credit card code again."
        break
else:
    print "Thank you. We will process your order!"

使用循环的一种紧凑替代方法是使用带有 any 函数的生成器表达式:

code = raw_input("what's your code?")

if all("0" <= digit <= "9" for digit in code):
    print "Thank you. We will process your order!"
else:
    print "The verification code was not valid. Please check your credit card code again."

Your first problem is that .split() doesn't split the string into characters, it splits the string at whitespace.

"12 34 56".split() == ["12", "34", "56"]

  • To go through each character in the input string, don't use .split(), just use for character in string.
  • I find it hard to read code with variable names like lol and rofl, so I've changed this.
  • Your check of 9 > int(digit) > 0 excludes 9 and 0. I assume this is an accident, so I'm using 0 <= int(digit) <= 9 and including them instead.
  • Your current code prints an error message each time it sees an invalid character. Instead I'll break out of the loop after I print it the first time, and print the success message if the loop completes without being broken.
  • If int(digit) fails to convert digit to an int, it will raise an exception. Instead, I'll just compare the character itself to see if it's between "0" and "9", instead of converting it.
code = raw_input("what's your code?")

for digit in code:
    if not ("0" <= digit <= "9"):
        print "The verification code was not valid. Please check your credit card code again."
        break
else:
    print "Thank you. We will process your order!"

A compact alternative to using a loop is to use a generator expression with the any function:

code = raw_input("what's your code?")

if all("0" <= digit <= "9" for digit in code):
    print "Thank you. We will process your order!"
else:
    print "The verification code was not valid. Please check your credit card code again."

代码检查程序-Python

走过海棠暮 2024-12-10 03:34:16

我刚刚使用以下代码成功了。它甚至绕过了 X-Frame-Options SAMEORIGIN 并允许在 iframe 中从一个域重定向到另一个域:

string url = "https://siteurl.com";
Response.Write("<script>top.location='"+url+"';parent.location='"+url+"';</script>");

使用 字符串插值(自 C# 6 起):

string url = "https://siteurl.com";
Response.Write($"<script>top.location='{url}';parent.location='{url}';</script>");

I just used the following code with success. It even bypassed the X-Frame-Options SAMEORIGIN and allows redirection from one domain to another one in an iframe:

string url = "https://siteurl.com";
Response.Write("<script>top.location='"+url+"';parent.location='"+url+"';</script>");

With string interpolation (since C# 6):

string url = "https://siteurl.com";
Response.Write($"<script>top.location='{url}';parent.location='{url}';</script>");

iFrame 中的 Response.Redirect(),重定向父窗口

走过海棠暮 2024-12-10 03:05:37

这里有非常详细的解释: https://github .com/sitaramc/gitolite/blob/pu/doc/ssh-troubleshooting.mkd#_appendix_4_host_aliases

使用~/.ssh/config 中的“主机”段落可以让您很好地将所有这些封装在 ssh 中,并为其指定一个简短、易于记忆的名称。示例:

host gitolite
    user git
    hostname a.long.server.name.or.annoying.IP.address
    port 22
    identityfile ~/.ssh/id_rsa

现在您可以简单地使用一个单词 gitolite (这是我们在此处定义的主机别名),ssh 将推断其下定义的所有详细信息 - 只需说 ssh gitolite 和 git clone gitolite:reponame 就可以了。

It is explained in great detail here: https://github.com/sitaramc/gitolite/blob/pu/doc/ssh-troubleshooting.mkd#_appendix_4_host_aliases

Using a "host" para in ~/.ssh/config lets you nicely encapsulate all this within ssh and give it a short, easy-to-remember, name. Example:

host gitolite
    user git
    hostname a.long.server.name.or.annoying.IP.address
    port 22
    identityfile ~/.ssh/id_rsa

Now you can simply use the one word gitolite (which is the host alias we defined here) and ssh will infer all those details defined under it -- just say ssh gitolite and git clone gitolite:reponame and things will work.

具有非默认端口的 gitolite

走过海棠暮 2024-12-09 23:14:15

我的错。在调用 [self willChangeValueForKey:@"isFinished"] 之前,我调用了自定义子类的委托方法,在该方法中我释放了任务本身。这就是为什么我收到 EXC_BAD_ACCESS 错误,因为 self 不再存在。

My fault. Before calling [self willChangeValueForKey:@"isFinished"] I was calling a delegate method of my custom subclass in which I was releasing the task itself. That's why I got the EXC_BAD_ACCESS error, because self didn't exist anymore.

将 NSOperation 的自定义子类标记为已终止?

更多

推荐作者

小瓶盖

文章 0 评论 0

wxsp_Ukbq8xGR

文章 0 评论 0

1638627670

文章 0 评论 0

仅一夜美梦

文章 0 评论 0

夜访吸血鬼

文章 0 评论 0

近卫軍团

文章 0 评论 0

    我们使用 Cookies 和其他技术来定制您的体验包括您的登录状态等。通过阅读我们的 隐私政策 了解更多相关信息。 单击 接受 或继续使用网站,即表示您同意使用 Cookies 和您的相关数据。
    原文