大约有 40,000 项符合查询结果（耗时：0.0473秒） [XML]
Replace multiple characters in a C# string
...te through the array of characters the least amount of times. Note the HashSet here, as it avoids to traverse the character sequence inside the loop. Should you need an even faster lookup, you can replace HashSet by an optimized lookup for char (based on an array[256]).
Example with StringBuilder
pu...
Extracting bits with a single multiplication
... something that a theorem prover can understand, namely SMT-LIB 2 input:
(set-logic BV)
(declare-const mask (_ BitVec 64))
(declare-const multiplicand (_ BitVec 64))
(assert
(forall ((x (_ BitVec 64)))
(let ((y (bvmul (bvand mask x) multiplicand)))
(and
(= ((_ extract ...
Combining Multiple Commits Into One Prior To Push
...e the feature branch into the master branch.
git merge feature_branch
Reset the master branch to origin's state.
git reset origin/master
Git now considers all changes as unstaged changes.
We can add these changes as one commit.
Adding . will also add untracked files.
git add --all
git commit...
Iterate over the lines of a string
... editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
...
Fetch frame count with ffmpeg
...ry for nb_frames or nb_read_frames.
-of default=nokey=1:noprint_wrappers=1 Set output format (aka the "writer") to default, do not print the key of each field (nokey=1), and do not print the section header and footer (noprint_wrappers=1). There are shorter alternatives such as -of csv=p=0.
Also se...
Double vs. BigDecimal?
I have to calculate some floating point variables and my colleague suggest me to use BigDecimal instead of double since it will be more precise. But I want to know what it is and how to make most out of BigDecimal ?
...
Split output of command by columns using Bash?
...
Using array variables
set $(ps | egrep "^11383 "); echo $4
or
A=( $(ps | egrep "^11383 ") ) ; echo ${A[3]}
share
|
improve this answer
...
YYYY-MM-DD format date in shell script
...$(date) in my bash shell script, however, I want the date in YYYY-MM-DD format.
How do I get this?
13 Answers
...
What characters are allowed in an email address?
...o more 256 in total).
The local-part and domain-part could have different set of permitted characters, but that's not all, as there are more rules to it.
In general, the local part can have these ASCII characters:
lowercase Latin letters: abcdefghijklmnopqrstuvwxyz,
uppercase Latin letters: ABCD...
How to return a string value from a Bash function
...
@Evi1M4chine, um...no, you can't. You can set a global variable and call it "return", as I see you do in your scripts. But then that is by convention, NOT actually tied programmatically to the execution of your code. "clearly a better way"? Um, no. Command substi...