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Iterate over object keys in node.js
...low for better optimisation.
Benchmark
As you can see Object.keys is significantly faster. Whether the actual memory storage is more optimum is a different matter.
var async = {};
async.forEach = function(o, cb) {
var counter = 0,
keys = Object.keys(o),
len = keys.length;
var next = f...
Input and output numpy arrays to h5py
...se output is a sized matrix, whose entries are all of the type float . If I save it with the extension .dat the file size is of the order of 500 MB. I read that using h5py reduces the file size considerably. So, let's say I have the 2D numpy array named A . How do I save it to an h5py file?...
How to ssh to vagrant without actually running “vagrant ssh”?
...$(vagrant ssh-config | grep Port | grep -o '[0-9]\+')
ssh -q \
-o UserKnownHostsFile=/dev/null \
-o StrictHostKeyChecking=no \
-i ~/.vagrant.d/insecure_private_key \
vagrant@localhost \
-p $PORT \
"$@"
As a one-liner (with thanks to kgadek):
ssh $(vagrant ssh-config | awk ...
Django Admin - Disable the 'Add' action for a specific model
... 3 security permissions for each model:
Create (aka add)
Change
Delete
If your logged in as Admin, you get EVERYTHING no matter what.
But if you create a new user group called "General Access" (for example) then you can assign ONLY the CHANGE and DELETE permissions for all of your models.
Then...
Windows x64编程中寄存器的使用 - C/C++ - 清泛网 - 专注C/C++及内核技术
... DWORD dwReadSize;
hFile = CreateFile(szFileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
... ...
}
CreateFile() 的参数有 7 个，那么看看 VC 是怎样安排参数传递：
void EditTextFile(HWND hEdit, LPCTSTR szF...
Build Eclipse Java Project from Command Line
...ally. This is also known as a 'Headless Build'. Damn hard to figure out. If you're not using a win32 exe, you can try this:
java -cp startup.jar -noSplash -data "D:\Source\MyProject\workspace" -application org.eclipse.jdt.apt.core.aptBuild
Update
Several years ago eclipse replaced startup.jar ...
Can anyone explain this strange behavior with signed floats in C#?
...
With .NET being open source software now, here is a link to the Core CLR implementation of ValueTypeHelper::CanCompareBits. Didn't want to update your answer since the implementation is slightly changed from the reference source you posted.
...
Is there a way to filter network requests using Google Chrome developer tools?
... Thanks, the domain: part is exactly what I was looking for right now. That and a bunch of others are currently covered in the documentation linked from the other answer
– JMM
May 26 '16 at 15:27
...
Tomcat: How to find out running tomcat version
...
if you can upload a JSP file you may print out some info like in this example: bestdesigns.co.in/blog/check-jsp-tomcat-version
Save this code into a file called tomcat_version.jsp:
Tomcat Version : <%= application.ge...
IntelliJ gives Fatal Error: Unable to find package java.lang in classpath or bootclasspath
...the JDK Home path field is pointing to a valid JDK folder (add a new entry if needed e.g. jdk1.8.0_161).
Within Project Settings > Modules:
Make sure that the Module SDK is set to the same entry you picked in the Platform Settings > SDKs
Save & Build again.
...