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Check synchronously if file/directory exists in Node.js
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currenct docs (version ~9) only labeled fs.exists as deprecated while fs.existsSync is not!
– Kunok
Dec 18 '17 at 15:38
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How to filter specific apps for ACTION_SEND intent (and set a different text for each app)
...lveInfo> resInfo = pm.queryIntentActivities(sendIntent, 0);
List<LabeledIntent> intentList = new ArrayList<LabeledIntent>();
for (int i = 0; i < resInfo.size(); i++) {
// Extract the label, append it, and repackage it in a LabeledIntent
ResolveInfo r...
ZeroMQ实例-使用ZMQ(ZeroMQ)进行局域网内网络通信 - C/C++ - 清泛网 - 专注C/C++及内核技术
...;
return 0;
}
//绑定地址 tcp://*:7766
//也就是使用tcp协议进行通信，使用网络端口 7766
if(zmq_bind(pSock, pAddr) < 0)
{
zmq_close(pSock);
zmq_ctx_destroy(pCtx);
return 0;
}
printf("bind at : %s\n", pAddr);
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Static variables in member functions
... class or a (non-templated) function, behave - technically - like a global label which scope is limited to the class or function.
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How can I know which parts in the code are never used?
... whenever
a function is declared static but
never defined, whenever a label is
declared but not used, and whenever a
statement computes a result that is
explicitly not used.
http://docs.freebsd.org/info/gcc/gcc.info.Warning_Options.html
Edit: Here is other useful flag -Wunreachable-co...
How do I find Waldo with Mathematica?
...a supervised machine learning classifier. Using many positive and negative labeled examples, an algorithm such as Support Vector Machine, Boosted Decision Stump or Boltzmann Machine could likely be trained to achieve high accuracy on this problem. Mathematica even includes these algorithms in its Ma...
Are there disadvantages to using a generic varchar(255) for all text-based fields?
...gits, the space in the middle is important, and should be shown on mailing labels. North american phone numbers may have more than 10 digits if there is an extention. If you are OK not being able to store phone number extensions, then 10 digits is fine, but you will probably regret it.
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Apply multiple functions to multiple groupby columns
...ion that returns a Series of all the aggregations. Use the Series index as labels for the new columns:
def f(x):
d = {}
d['a_sum'] = x['a'].sum()
d['a_max'] = x['a'].max()
d['b_mean'] = x['b'].mean()
d['c_d_prodsum'] = (x['c'] * x['d']).sum()
return pd.Series(d, index=['a_su...
HTML5: Slider with two inputs possible?
...some CSS3 styling to show what you can do (webkit only). I also added some labels to display the selected values.
It uses JQuery but a vanillajs version is no magic though.
(function() {
function addSeparator(nStr) {
nStr += '';
var x = nStr.split('.'...
CALL command vs. START with /WAIT option
...nother without stopping the parent batch program. The call command accepts labels as the target of the call. Call has no effect at the command-line when used outside of a script or batch file.
https://technet.microsoft.com/en-us/library/bb490873.aspx
Start
Starts a separate Command Prompt window t...