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Idiomatic way to wait for multiple callbacks in Node.js
...omises in parallel
var a = Promise.resolve(1);
var b = Promise.resolve(2);
var c = Promise.resolve(3);
var res = yield [a, b, c];
console.log(res);
// => [1, 2, 3]
}).catch(onerror);
// errors can be try/catched
co(function *(){
try {
yield Promise.reject(new Error('boom'));
...
How to read the mode field of git-ls-tree's output
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2 Answers
2
Active
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Create module variables in Ruby
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edited Jul 26 '19 at 17:08
answered Apr 16 '11 at 23:52
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Convert Dictionary to semicolon separated string in c#
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294
using System.Linq;
string s = string.Join(";", myDict.Select(x => x.Key + "=" + x.Value).T...
pandas read_csv and filter columns with usecols
...pandas as pd
from StringIO import StringIO
csv = r"""dummy,date,loc,x
bar,20090101,a,1
bar,20090102,a,3
bar,20090103,a,5
bar,20090101,b,1
bar,20090102,b,3
bar,20090103,b,5"""
df = pd.read_csv(StringIO(csv),
header=0,
index_col=["date", "loc"],
usecols=["date", "loc", "x"],...
【软著】软件著作权证书申请流程及注意事项，模板分享 - App Inventor 2 中...
...合法权益，也能增加软件的商业价值和市场竞争力。
2、申请流程（待整理）
登记入口：https://register.ccopyright.com.cn/registration.html#/index
注册账户、登记信息、实名认证。。
填写填报完成，上传盖章的签章页即可：
3...
Detect application heap size in Android
...lls you how many total bytes of heap your app is allowed to use.
For item 2 above: getMemoryClass()
which can be invoked as follows:
ActivityManager am = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
int memoryClass = am.getMemoryClass();
Log.v("onCreate", "memoryClass:" + Integer.toStrin...
VSS使用指南 - 开源 & Github - 清泛网 - 专注IT技能提升
...vwapdemoProject/…
$/公司产品/WAP产品/thirdparty/jdbc/oracle/class12.jare:devthirdpartyjdbcoracleclass12.jar
$/公司产品/WAP产品/ptree/common/lib/… e:/dev/demoProject/shared/common/lib/…
$/公司产品/WAP产品/代码/common/build/build.sh e:/dev/demoProject/build/build.sh
…...
Spring @Transactional - isolation, propagation
...d option.
Example of when a dirty read can occur:
thread 1 thread 2
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write(x) |
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| read(x)
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rollback |
v v
value (x) is now dirty (incorrect)
So a sane default (if such can be cla...
Using python's eval() vs. ast.literal_eval()?
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edited Jul 26 '16 at 11:10
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answered Mar 4 '13 at 8:52
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