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Deep Learning（深度学习）学习笔记整理系列之（一） - 大数据 & AI - 清泛...
...sten Wiesel 发现了一种被称为“方向选择性细胞（Orientation Selective Cell）”的神经元细胞。当瞳孔发现了眼前的物体的边缘，而且这个边缘指向某个方向时，这种神经元细胞就会活跃。
这个发现激发了人们对于神经系统的进...
Deep Learning（深度学习）学习笔记整理系列之（一） - 大数据 & AI - 清泛...
...sten Wiesel 发现了一种被称为“方向选择性细胞（Orientation Selective Cell）”的神经元细胞。当瞳孔发现了眼前的物体的边缘，而且这个边缘指向某个方向时，这种神经元细胞就会活跃。
这个发现激发了人们对于神经系统的进...
Display open transactions in MySQL
... the current transaction list in InnoDB with the query below if you want.
SELECT * FROM information_schema.innodb_trx\G
From the document:
The INNODB_TRX table contains information about every transaction (excluding read-only transactions) currently executing inside InnoDB, including whether t...
What is the most ridiculous pessimization you've seen? [closed]
...nearly all their tables have an associated archive table, and most queries select from views that UNION the pairs of tables. Performance is as you would expect!
– Tony Andrews
Mar 26 '09 at 13:32
...
Set markers for individual points on a line in Matplotlib
...rve which happens to have markers. So you are expected to have to manually select the points. This subject is interesting and goes deeper, will comment more in a future post, after releasing relevant code.
– Ioannis Filippidis
Nov 25 '13 at 7:41
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Symbolicating iPhone App Crash Reports
...able if the script complains about it like so: export DEVELOPER_DIR=`xcode-select --print-path` . I added this line to my ~/.bash_profile. See stackoverflow.com/q/11682789/350761
– Eliot
Sep 22 '13 at 6:54
...
scala vs java, performance and memory? [closed]
...ing where your Scala example only does it once after the Strings have been selected? I.e. they are optimised in different ways for different data sets?
– Seth
May 9 '12 at 1:53
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How do you effectively model inheritance in a database?
...etimes needed, when you want to load a list of all records (without doing select on each and every child table). One way to handle this, is to have one column representing the type of the child class (similar to the rowType field in the TPH), so mixing the TPT and TPH somehow.
Say we want to des...
CSS: bolding some text without changing its container's size
...e widths to be defined by the width of the menu item. I bold the currently-selected item.
11 Answers
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How to 'bulk update' with Django?
...each essentially having the form of the first example above) + the initial SELECT-query.
If every row requires a unique value there is no way to avoid one query per update. Perhaps look into other architectures like CQRS/Event sourcing if you need performance in this latter case.
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