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Transposing a 2D-array in JavaScript
...ow => row[colIndex]));
map calls a provided callback function once for each element in an array, in order, and constructs a new array from the results. callback is invoked only for indexes of the array which have assigned values; it is not invoked for indexes which have been deleted or which...
append multiple values for one key in a dictionary [duplicate]
I am new to python and I have a list of years and values for each year. What I want to do is check if the year already exists in a dictionary and if it does, append the value to that list of values for the specific key.
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Real world example about how to use property feature in python?
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Other examples would be validation/filtering of the set attributes (forcing them to be in bounds or acceptable) and lazy evaluation of complex or rapidly changing terms.
Complex calculation hidden behind an attribute:
class PDB_Calculator(object):
...
@property
def protein_foldi...
Forward an invocation of a variadic function in C
In C, is it possible to forward the invocation of a variadic function? As in,
12 Answers
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Constructor overload in TypeScript
... @remcoder, that would always be true. Some kinds of type information are not available at runtime. For example, there is no concept of the interface IBox in the generated JavaScript. It could work for classes and built in types, but I suppose given the potential confusion around this...
C/C++获取Windows的CPU、内存、硬盘使用率 - C/C++ - 清泛网 - 专注C/C++及内核技术
...且每次触发后自动设置为nonsignaled
while (true)
{
WaitForSingleObject(hEvent, 1000);
res = GetSystemTimes(&idleTime, &kernelTime, &userTime);
__int64 idle = CompareFileTime(preidleTime, idleTime);
__int64 kernel = CompareFileTime(prekernelTime, kernelTime);
__int64 u...
Saving an Object (Data persistence)
...eferable to actually use the cPickle module rather than pickle because the former is written in C and is much faster. There are some subtle differences between them, but in most situations they're equivalent and the C version will provide greatly superior performance. Switching to it couldn't be eas...
How to do Base64 encoding in node.js?
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Buffers can be used for taking a string or piece of data and doing base64 encoding of the result. For example:
> console.log(Buffer.from("Hello World").toString('base64'));
SGVsbG8gV29ybGQ=
> console.log(Buffer.from("SGVsbG8gV29ybGQ=", 'b...
How to set versionName in APK filename using gradle?
...b files).
See Also: How to change the proguard mapping file name in gradle for Android project
#Solution for Recent Gradle Plugin
android {
compileSdkVersion 22
buildToolsVersion "22.0.1"
defaultConfig {
applicationId "com.company.app"
minSdkVersion 13
targetSdkVe...
Resolve build errors due to circular dependency amongst classes
...lasses in different header files (can happen also in the same file) . But fortunately(?) this doesn't happen often enough for me to remember the solution to this problem for the next time it happens again.
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