大约有 32,000 项符合查询结果（耗时：0.0385秒） [XML]
Java: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification
...d downloads the provided certificate from the remote server and saves it locally in x509 format. The second command loads the saved certificate into Java's SSL trust store.
openssl x509 -in <(openssl s_client -connect example.com:443 -prexit 2>/dev/null) -out ~/example.crt
sudo keytool -impor...
How to export JavaScript array info to csv (on client side)?
...
// Scroll/look down at the bottom of this snippet to see how download is called
var download = function(content, fileName, mimeType) {
var a = document.createElement('a');
mimeType = mimeType || 'application/octet-stream';
if (navigator.msSaveBlob) { // IE10
navigator.msSaveBlob(n...
How expensive is the lock statement?
... not held by anyone based on atomic operations and in such case, it avoids calls to operating system core, that is different ring which is not measured by these tests. What is measured as 25ns to 50ns is actually application level interlocked instructions code if lock is not taken
...
Delete rows from a pandas DataFrame based on a conditional expression involving len(string) giving K
...this index trick you need to be sure that your index values are unique (or call reset_index()). I found this out the hard way when way to many rows got dropped from my dataframe.
– Jay
Apr 6 '17 at 21:03
...
Node.js spawn child process and get terminal output live
...wn command that Node.js can resolve against your system path.
1. Provide a callback to process the buffered output:
var child = require('child_process').execFile('path/to/script', [
'arg1', 'arg2', 'arg3',
], function(err, stdout, stderr) {
// Node.js will invoke this callback when proces...
is there a css hack for safari only NOT chrome?
...ltiple other hacks.
NOTES: like above, the double media query is NOT an accident -- it rules out many older browsers that cannot handle media query nesting. -- The missing space after one of the 'and's is important as well. This is after all, a hack... and the only one that works for 6.1 and all new...
Strengths of Shell Scripting compared to Python [closed]
... Also notable with respect to #4 is that the bash shell specifically is not universally available on all linux distros, in particular those for embedded systems, and others running the busybox executable. Scripts which target the Bourne shell itself, with which bash is backwards-compati...
Can not connect to local PostgreSQL
...t connect to server: No such file or directory
Is the server running locally and accepting
connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?
Unix socket exists, but server not listening to it.
psql: could not connect to server: Connection refused
Is the server run...
C++ SFINAE examples?
...nt<T>::value> f(T t){
//floating point version
}
Using a so called type sink idiom you can do pretty arbitrary tests on a type like checking if it has a member and if that member is of a certain type
//this goes in some header so you can use it everywhere
template<typename T>
s...
What is the purpose of using -pedantic in GCC/G++ compiler?
... program that didn't was explicitly using __int128 types, which are pedantically incorrect). I think there was an intervening stage when GCC was too noisy (for my liking) with -pedantic. I just tested about 300 source files — some library code, some commands, some SO test programs — and there ...