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How to convert byte array to string and vice versa?
...
The root problem is (I think) that you are unwittingly using a character set for which:
bytes != encode(decode(bytes))
in some cases. UTF-8 is an example of such a character set. Specifically, certain sequences of bytes are...
Adding 'serial' to existing column in Postgres
...int, b text);
CREATE TABLE bar (a serial, b text);
INSERT INTO foo (a, b) SELECT i, 'foo ' || i::text FROM generate_series(1, 5) i;
INSERT INTO bar (b) SELECT 'bar ' || i::text FROM generate_series(1, 5) i;
-- blocks of commands to turn foo into bar
CREATE SEQUENCE foo_a_seq;
ALTER TABLE foo ALTER...
How to convert all text to lowercase in Vim
...ggVGu
Explanation:
gg - goes to first line of text
V - turns on Visual selection, in line mode
G - goes to end of file (at the moment you have whole text selected)
u - lowercase selected area
share
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数据存储组件 · App Inventor 2 中文网
...Google Sheets API，最后创建一个Sheets API 的服务帐户。
有关如何创建服务帐户以及在何处查找的说明使用 Google 表格组件的其他相关信息，可以在此处找到。
行号和列号是从 1 开始索引的。
属性
ApplicationName
...
Session timeout in ASP.NET
...a subfolder in your application, that setting will override the one in the root of your application.
Also, if I remember correctly, the timeout in IIS only affects .asp pages, not .aspx. Are you sure your session code in web.config is correct? It should look something like:
<sessionState
...
What's the difference between $evalAsync and $timeout in AngularJS?
...k - potentially affecting angular model - then launch a full $apply on the root $scope, and redigest everything.
$evalAsync(callback), on the other hand, will add the callback to the current, or next, digest cycle. Which means if you are within a digest cycle (for instance in a function called from ...
How do API Keys and Secret Keys work? Would it be secure if I have to pass my API and secret keys to
...d the secret key, and with most Unix based systems, if an attacker can get root access they can get the key. If you encrypt the key, you have to have code to decrypt it, and at some point the decryption code has to be plain text so it can be executed. This is the same problem DRM has, except that yo...
Reset auto increment counter in postgres
... Does anyone know why ALTER SEQUENCE product_id_seq RESTART WITH (SELECT MAX(id) from product); Doesn't work? The only way I found is to use two separate queries.
– Chris Huang-Leaver
Dec 20 '18 at 3:14
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How to create a dialog with “yes” and “no” options?
... dynamically-generated elements:
a and button clicks
form submits
option selects
jQuery:
$(document).on('click', ':not(form)[data-confirm]', function(e){
if(!confirm($(this).data('confirm'))){
e.stopImmediatePropagation();
e.preventDefault();
}
});
$(document).on('submi...
How to use my view helpers in my ActionMailer views?
...nly need it in the one Mailer:
helper do
def host_url_for(url_path)
root_url.chop + url_path
end
end
(be sure to set config.action_mailer.default_url_options.)
(and if you use url_for, be sure to pass in :only_path => false)
...