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Difference between “process.stdout.write” and “console.log” in node.js?
...{
process.stdout.write(d + '\n');
};
Source: http://nodejs.org/docs/v0.3.1/api/process.html#process.stdout
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App Inventor 2 倒计时与计时器教程 - Clock组件详解 · App Inventor 2 中文网
...方法
三、时间获取与格式化
3.1 获取当前时间
3.2 提取时间的各个部分
3.3 显示实时时钟
四、正计时（秒表）
4.1 界面设计
4.2 需要的变量
4.3 开始计时
4.4 Timer 事件...
TypeError: 'str' does not support the buffer interface
... It's odd that this fixed it; the original code worked for me under 3.1, and the sample code in the docs also does not encode explicitly. If you use it on non-ASCII text, does gunzip decompress it? I got an error.
– Tom Zych
Mar 29 '11 at 10:59
...
C++11 emplace_back on vector?
...ve(c))
{}
};
vector<T> V;
int main()
{
V.emplace_back(42, 3.14, "foo");
}
The point of using emplace_back is to avoid creating a temporary object, which is then copied (or moved) to the destination. While it is also possible to create a temporary object, then pass that to emplace_...
Formatting floats without trailing zeros
...
You could use %g to achieve this:
'%g'%(3.140)
or, for Python 2.6 or better:
'{0:g}'.format(3.140)
From the docs for format: g causes (among other things)
insignificant trailing zeros [to be]
removed from the significand, and the
decimal point is also ...
ORA-30926: unable to get a stable set of rows in the source tables
...tly been done. Rebuilding (or dropping/recreating) indexes may help too.
3.1) Is the SQL statement a MERGE?
evaluate the data returned by the USING clause to ensure that there are no duplicate values in the join. Modify the merge statement to include a deterministic where clause
3.2) Is this an ...
Deleting all pending tasks in celery / rabbitmq
...+: manage.py celery purge (celeryctl is now deprecated and will be gone in 3.1).
– Henrik Heimbuerger
Apr 19 '13 at 14:26
3
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What do helper and helper_method do?
...s means is doing
# application_controller.rb
helper :all
For Rails > 3.1
# application.rb
config.action_controller.include_all_helpers = true
# This is the default anyway, but worth knowing how to turn it off
makes all helper modules available to all views (at least for all controllers inhe...
Any gotchas using unicode_literals in Python 2.6?
... = b'\xa4'
assert eval(repr(bstr)) == bstr # fails in Python 2.7, holds in 3.1+
ustr = '\xa4'
assert eval(repr(ustr)) == ustr # holds in Python 2.7 and 3.1+
The second assertion happens to work, since repr('\xa4') evaluates to u'\xa4' in Python 2.7.
...
Case objects vs Enumerations in Scala
...The following items from the enumeration definition are not available:
3.1 - It would be quite nice if a member could also be retrieved with its case insensitive name
7 - Thinking beyond Java's Enum, it would be nice to be able to explicitly leverage Scala's pattern matching exhaustiveness che...