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Why does PostgreSQL perform sequential scan on indexed column?
..., you should generally use bounded ranges in where clause. eg -
year > 2019 and year < 2020.
A lot of the times statistics are not updated on a table and it may not be possible to do so due to constraints. In this case, the optimizer will not know how many rows it should take in year > 20...
How make Eclipse/EGit recognize existing repository information after update?
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Still useful in 2019 with Eclipse 2019-06. My projects all somehow lost their git connection. This is despite the repositories being visible and pointing to the correct working directories. Been looking at how to fix this for ages. Thank...
What's the equivalent for eclipse's ALT+UP/DOWN (move line) in Visual Studio?
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For me in Visual Studio 2019 it comes default closed.
For open it:
Tools -> Options -> Keyboard then select Edit.MoveSelectedLinesUp, click "Press shortcut keys" input and press Alt + Up (or whatever you want for it). And the other one is Ed...
Difference between Python datetime vs time modules
...me
t = time.time()
time.strftime('%Y-%m-%d %H:%M %Z', time.localtime(t))
'2019-05-27 12:03 CEST'
time.strftime('%Y-%m-%d %H:%M %Z', time.gmtime(t))
'2019-05-27 10:03 GMT'
time.time() is a floating point number representing the time in seconds since the system epoch. time.time() is ideal for unamb...
Is there any way to change input type=“date” format?
...heir operating system or browser language set to en-us will be shown 01/30/2019 instead of the format they are accustomed to: 30-01-2019.
Internet Explorer 9, 10, and 11 display a text input field with the wire format.
Mobile devices
Specifically for Chrome on Android, the formatting is based on ...
凤姐当天使 徐小平胡海泉薛蛮子王刚怎么看？ - 资讯 - 清泛网 - 专注C/C++...
...的机构走入LP，引入机构化的决策，然后让投资决策相对专业化。
这里我想提一点，这种机构化之后，的确会跟“天使投资”这种本来就有的个人色彩，有一定的冲突，或者相左，个人色彩会更加少，但是在今天这个环境之下...
How to get a subset of a javascript object's properties
... >= 0)
.reduce((obj2, key) => (obj2[key] = obj[key], obj2), {});
ES2019
ECMAScript 2017 has Object.entries and Array.prototype.includes, ECMAScript 2019 has Object.fromEntries, they can be polyfilled when needed and make the task easier:
let subset = Object.fromEntries(
Object.entries(ob...
format date with moment.js
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moment().format(); // "2019-08-12T17:52:17-05:00" (ISO 8601, no fractional seconds)
moment().format("dddd, MMMM Do YYYY, h:mm:ss a"); // "Monday, August 12th 2019, 5:52:00 pm"
moment().format("ddd, hA"); // "Mon, 5PM"
...
How can I rename a project folder from within Visual Studio?
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This did not work for me in VS2019. Gives warnings about project references not existing and compile errors about missing the namespaces and classes in the referenced project.
– Jeff Walker Code Ranger
May 12 at 17:5...
How to write to a file in Scala?
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Edit 2019 (8 years later), Scala-IO being not very active, if any, Li Haoyi suggests his own library lihaoyi/os-lib, that he presents below.
June 2019, Xavier Guihot mentions in his answer the library Using, a utility for perform...