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Difference between Java Enumeration and Iterator
...CC, EEE. ----------------------------------------------------- Vector<String> v=new Vector<String>(6); v.add("AAA"); v.add("BBB"); v.add("CCC"); v.add("DDD"); v.add("EEE"); v.add("FFF"); Enumeration<String> en = v.elements(); while(en.hasMoreElements()) String value=(String) en.n...
Git Cherry-pick vs Merge Workflow
...e. (As a minor secondary issue the new cherry-picked commits will take up extra space if someone else cherry-picks in the same commit again, as they will both be present in the history even if your working copies end up being identical.)
Ease of use. People tend to understand the merge workflow fa...
(Built-in) way in JavaScript to check if a string is a valid number
...
To check if a variable (including a string) is a number, check if it is not a number:
This works regardless of whether the variable content is a string or number.
isNaN(num) // returns true if the variable does NOT contain a valid number
Examples
i...
How to attach javadoc or sources to jars in libs folder?
...f you are only going to link the Javadoc and not the source code, I had to extract the Javadoc jar with 7zip to a folder in My Documents, then have the properties file point to the folder with the Javadoc index.html directly like so doc=C:\\Users\\johny\\workspacenewfb\\robotium-solo-4.0-javadoc
...
List of Delphi language features and version in which they were introduced/deprecated
... easier.
Inline variables with automatic type inference
8 bit AnsiChar/AnsiString support in enable on Linux.
C++Builder and Delphi now use the same ABI for all calls.
Delphi 10.2 Tokyo
Support for Linux server apps (Intel 64-bit using LLVM and ARC).
Assigning a dynamic arrays to a pointer usi...
Is there a RegExp.escape function in Javascript?
I just want to create a regular expression out of any possible string.
15 Answers
15
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Differences between TCP sockets and web sockets, one more time [duplicate]
...ou can do message based communication using TCP sockets, but you need some extra layer/encapsulation that is adding framing/message boundary data to the messages so that the original messages can be re-assembled from the pieces. In fact, WebSockets is built on normal TCP sockets and uses frame heade...
How can I convert byte size into a human-readable format in Java?
...o human readable format | Programming.Guide
SI (1 k = 1,000)
public static String humanReadableByteCountSI(long bytes) {
if (-1000 < bytes && bytes < 1000) {
return bytes + " B";
}
CharacterIterator ci = new StringCharacterIterator("kMGTPE");
while (bytes <= ...
Why does changing 0.1f to 0 slow down performance by 10x?
...ormance!!!
Denormal (or subnormal) numbers are kind of a hack to get some extra values very close to zero out of the floating point representation. Operations on denormalized floating-point can be tens to hundreds of times slower than on normalized floating-point. This is because many processors ca...
What does int argc, char *argv[] mean?
...e arguments are passed to main() in C and C++.
argc will be the number of strings pointed to by argv. This will (in practice) be 1 plus the number of arguments, as virtually all implementations will prepend the name of the program to the array.
The variables are named argc (argument count) and ar...