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Finding the number of days between two dates
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edited May 15 '19 at 6:06
Cava
3,48433 gold badges1616 silver badges2929 bronze badges
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Eclipse debugger always blocks on ThreadPoolExecutor without any obvious exception, why?
I'm working on my usual projects on Eclipse, it's a J2EE application, made with Spring, Hibernate and so on. I'm using Tomcat 7 for this (no particular reason, I don't exploit any new feature, I just wanted to try that). Every time I debug my application, it happens that Eclipse debugger pops out li...
Detect if value is number in MySQL
...k in most cases.
SELECT * FROM myTable WHERE concat('',col1 * 1) = col1
It doesn't work for non-standard numbers like
1e4
1.2e5
123. (trailing decimal)
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Python: try statement in a single line
...no way to compress a try/except block onto a single line in Python.
Also, it is a bad thing not to know whether a variable exists in Python, like you would in some other dynamic languages. The safer way (and the prevailing style) is to set all variables to something. If they might not get set, set ...
How to assign a heredoc value to a variable in Bash?
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You can avoid a useless use of cat and handle mismatched quotes better with this:
$ read -r -d '' VAR <<'EOF'
abc'asdf"
$(dont-execute-this)
foo"bar"''
EOF
If you don't quote the variable when you echo it, newlines are lost. Quoting it preserves them:
$ echo "$VAR"
abc'asdf"
$(dont-exec...
CSS: 100% font size - 100% of what?
...rs as well.
I personally like to control the default font size of my websites, so in a CSS file that is included in every page I will set the BODY default, like so:
body {
font-family: Helvetica, Arial, sans-serif;
font-size: 14px
}
Now the font-size of all my HTML tags will inherit a f...
Is well formed without a ?
Is it valid to have <input> without it being in a <form> ?
7 Answers
7
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Passing a 2D array to a C++ function
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edited Feb 25 '15 at 18:38
Peter Mortensen
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How do I copy a string to the clipboard on Windows using Python?
...c Windows application that builds a string out of user input and then adds it to the clipboard. How do I copy a string to the clipboard using Python?
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How to allow to accept only image files?
...ed, so you should always validate the uploaded file on the server also.
It should work in IE 10+, Chrome, Firefox, Safari 6+, Opera 15+, but support is very sketchy on mobiles (as of 2015) and by some reports this may actually prevent some mobile browsers from uploading anything at all, so be sur...