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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...
Running a cron every 30 seconds
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superb answer, should be the selected answer
– GuidedHacking
Feb 21 at 16:42
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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 I Sort a Multidimensional Array in PHP [duplicate]
...'s associative if you want: this code takes care of sorting items, but you select the actual sort function (usort or uasort).
Finally, it does not use array_multisort: while array_multisort is convenient, it depends on creating a projection of all your input data before sorting. This consumes time a...
Is < faster than
...ughput
Jcc N/A 0.5
with the following footnote on Jcc:
7) Selection of conditional jump instructions should be based on the recommendation of section Section 3.4.1, “Branch Prediction Optimization,” to improve the predictability of branches. When branches are predicted successf...
How can I use if/else in a dictionary comprehension?
...ry for further processing like validation, or editing which we must return selected data from file back to entry widgets, etc.
The first round using traditional coding (8 lines):
entries = {'name': 'Material Name', 'maxt': 'Max Working Temperature', 'ther': {100: 1.1, 200: 1.2}}
a_dic, b_dic = {}, ...
Finding the index of elements based on a condition using python list comprehension
...x <= 2]
Matlab supplies find because its array-centric model works by selecting items using their array indices. You can do this in Python, certainly, but the more Pythonic way is using iterators and generators, as already mentioned by @EliBendersky.
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How can I tell if a DOM element is visible in the current viewport?
... old answer is very slow, not accurate and has several bugs.
The solution selected as correct is almost never precise. You can read more about its bugs.
This solution was tested on Internet Explorer 7 (and later), iOS 5 (and later) Safari, Android 2.0 (Eclair) and later, BlackBerry, Opera Mob...
What's the difference between HEAD^ and HEAD~ in Git?
... commit with only one parent, rev~ and rev^ mean the same thing. The caret selector becomes useful with merge commits because each one is the child of two or more parents — and strains language borrowed from biology.
HEAD^ means the first immediate parent of the tip of the current branch. HEAD^ is...
How is a tag different from a branch in Git? Which should I use, here?
...;" would generate anonymous unnamed branch (so called 'detached HEAD') and select state of tag. Creating a new commit does it on this unnamed branch, and does not change what tag points to.
– Jakub Narębski
Feb 16 '12 at 14:04
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