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How do I merge two dictionaries in a single expression in Python (taking union of dictionaries)?
...65235292912
>>> min(repeat(lambda: merge_two_dicts(x, y)))
1.636518670246005
>>> min(repeat(lambda: {k: v for d in (x, y) for k, v in d.items()}))
3.1779992282390594
>>> min(repeat(lambda: dict(chain(x.items(), y.items()))))
2.740647904574871
>>> min(repeat(lambda...
How to debug Lock wait timeout exceeded on MySQL?
...ct(s), heap size 3024, 8 row lock(s), undo log entries 1
MySQL thread id 3686635, query id 124164167 10.64.89.145 viget updating
DELETE FROM file WHERE file_id in ('6dbafa39-7f00-0001-51f2-412a450be5cc' )
Foreign key constraint fails for table `backoffice`.`attachment`:
,
CONSTRAINT `attachment_ib...
Should I use Vagrant or Docker for creating an isolated environment? [closed]
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creackcreack
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WiX tricks and tips
...or easier manipulation by an external tool.
Define Platform variables for x86 and x64 builds
<!-- Product name as you want it to appear in Add/Remove Programs-->
<?if $(var.Platform) = x64 ?>
<?define ProductName = "Product Name (64 bit)" ?>
<?define Win64 = "yes" ?>
&...
How to write iOS app purely in C
...String *delegateClassName);
// So, we rely on the fact that for both the i386 & ARM architectures,
// the registers for parameters passed in remain the same whether or not
// you are using VA_ARGS. This is actually the basis of the objective-c
// runtime (objc_msgSend), so we are probably fin...
Releasing memory in Python
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Memory allocated on the heap can be subject to high-water marks. This is complicated by Python'...
android ellipsize multiline textview
...多数情况下workingText为中文，所以按照之前的逻辑找空格是不合适的 // 这里改成直接替换最后的字符 workingText = workingText.substring(0, workingText.length() - 1 - 1); }
– chengbo
Oct 31 '11 at 5:37
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AI助手生成代码编译apk报错 - AI 助手 - 清泛IT社区，为创新赋能！
...: Build 2 Failed: 1 [RunAapt] ERROR: Error running AAPT复制代码
原因是：Screen2中的属性值被AI设置错了，首字母大写不对。重新下拉设置一下。
新的报错： 'res/mipmap-xxxhdpi-v4/ic_launcher_round.png' (not compressed)
&...
Pointers vs. values in parameters and return values
...ction step but for the increase of cache misses.
Myth breaker: a typical x86 cache line are 64 bytes. Most structs are smaller than that. The time of copying a cache line in memory is similar to copying a pointer.
Only if a critical part of your code is slow I would try some micro-optimization and...
String is immutable. What exactly is the meaning? [duplicate]
...the behavior of its methods." Good explanation!
– Gab是好人
Jul 21 '15 at 11:52
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